User contributions
- 18:53, 22 November 2013 (diff | hist) . . (+485) . . 2013 AMC 12A Problems/Problem 14
- 18:11, 22 November 2013 (diff | hist) . . (+554) . . 2013 AMC 12A Problems/Problem 6
- 10:34, 16 February 2010 (diff | hist) . . (+846) . . 2010 AMC 12A Problems/Problem 3
- 10:24, 16 February 2010 (diff | hist) . . (+729) . . 2010 AMC 12A Problems/Problem 9 (→Solution)
- 10:09, 16 February 2010 (diff | hist) . . (+463) . . 2010 AMC 12A Problems/Problem 12
- 10:00, 16 February 2010 (diff | hist) . . (+1,049) . . 2010 AMC 12A Problems/Problem 13 (→Solution)
- 09:26, 16 February 2010 (diff | hist) . . (+134) . . 2010 AMC 12A Problems/Problem 15 (→Solution)
- 09:19, 16 February 2010 (diff | hist) . . (+1,479) . . 2010 AMC 12A Problems/Problem 18 (→Brute Force Solution)
- 08:46, 16 February 2010 (diff | hist) . . (+1,182) . . 2010 AMC 12A Problems/Problem 20 (→Solution)
- 08:02, 16 February 2010 (diff | hist) . . (+2,654) . . 2010 AMC 12A Problems/Problem 22 (→Solution)
- 21:05, 26 September 2009 (diff | hist) . . (+1,162) . . 1976 IMO Problems/Problem 1 (→Solution) (current)
- 12:23, 6 June 2009 (diff | hist) . . (+38) . . m 2006 AMC 10A Problems/Problem 16 (→Solution)
- 21:43, 18 April 2009 (diff | hist) . . (+2,251) . . 2009 AIME II Problems/Problem 13
- 10:58, 15 April 2009 (diff | hist) . . (-1) . . m 2009 AIME II Problems/Problem 14 (→Solution 2)
- 10:53, 15 April 2009 (diff | hist) . . (+3,137) . . 1988 AJHSME Problems/Problem 24 (fixed an incorrect answer)
- 15:07, 14 April 2009 (diff | hist) . . (+4,220) . . N 2009 AIME II Problems/Problem 14 (New page: == Problem == The sequence <math>(a_n)</math> satisfies <math>a_0=0</math> and <math>a_{n + 1} = \frac85a_n + \frac65\sqrt {4^n - a_n^2}</math> for <math>n\geq 0</math>. Find the greatest ...)
- 08:36, 14 April 2009 (diff | hist) . . (+2,543) . . 2009 AIME II Problems
- 12:00, 13 April 2009 (diff | hist) . . (+2,716) . . N 2009 AIME II Problems/Problem 7 (New page: == Problem == Define <math>n!!</math> to be <math>n(n-2)(n-4)\cdots 3\cdot 1</math> for <math>n</math> odd and <math>n(n-2)(n-4)\cdots 4\cdot 2</math> for <math>n</math> even. When <math>\...)
- 13:49, 9 April 2009 (diff | hist) . . (+2,543) . . N 2009 AIME II Problems/Problem 12 (New page: == Problem == From the set of integers <math>\{1,2,3,\dots,2009\}</math>, choose <math>k</math> pairs <math>\{a_i,b_i\}</math> with <math>a_i<b_i</math> so that no two pairs have a common ...)
- 13:19, 9 April 2009 (diff | hist) . . (+339) . . 2009 AIME II Problems
- 13:14, 9 April 2009 (diff | hist) . . (+189) . . Talk:2009 AIME II Problems/Problem 4
- 13:12, 9 April 2009 (diff | hist) . . (+91) . . 2009 AIME II Problems/Problem 4
- 12:31, 9 April 2009 (diff | hist) . . (-6) . . m 2009 AIME II Problems/Problem 9 (→Solution 1)
- 12:30, 9 April 2009 (diff | hist) . . (+84) . . N Talk:2009 AIME II Problems/Problem 4 (New page: Does the "another solution" differ from the first one? To me, they seem identical...)
- 13:08, 8 April 2009 (diff | hist) . . (+1,949) . . N 2009 AIME II Problems/Problem 11 (New page: == Problem == For certain pairs <math>(m,n)</math> of positive integers with <math>m\geq n</math> there are exactly <math>50</math> distinct positive integers <math>k</math> such that <mat...)
- 11:25, 8 April 2009 (diff | hist) . . (+279) . . 2009 AIME II Problems (→Problem 11)
- 08:04, 8 April 2009 (diff | hist) . . (+1,634) . . N 2009 AIME II Problems/Problem 6 (New page: == Problem == Let <math>m</math> be the number of five-element subsets that can be chosen from the set of the first <math>14</math> natural numbers so that at least two of the five numbers...)
- 18:35, 7 April 2009 (diff | hist) . . (+3,452) . . N 2009 AIME II Problems/Problem 9 (New page: == Problem == Let <math>m</math> be the number of solutions in positive integers to the equation <math>4x+3y+2z=2009</math>, and let <math>n</math> be the number of solutions in positive i...)
- 18:05, 7 April 2009 (diff | hist) . . (+3,335) . . N 2009 AIME II Problems/Problem 8 (New page: == Problem == Dave rolls a fair six-sided die until a six appears for the first time. Independently, Linda rolls a fair six-sided die until a six appears for the first time. Let <math>m</m...)
- 14:33, 7 April 2009 (diff | hist) . . (+2,448) . . 2009 AIME II Problems (problems 6-10)
- 07:40, 7 April 2009 (diff | hist) . . (+1,242) . . N 2009 AIME II Problems/Problem 2 (New page: == Problem == Suppose that <math>a</math>, <math>b</math>, and <math>c</math> are positive real numbers such that <math>a^{\log_3 7} = 27</math>, <math>b^{\log_7 11} = 49</math>, and <math...)
- 13:39, 6 April 2009 (diff | hist) . . (+2,725) . . N 2009 AIME II Problems/Problem 4 (New page: == Problem == A group of children held a grape-eating contest. When the contest was over, the winner had eaten <math>n</math> grapes, and the child in <math>k</math>-th place had eaten <m...)
- 13:16, 6 April 2009 (diff | hist) . . (+1,346) . . 2009 AIME II Problems (tasks 1 to 4)
- 13:10, 6 April 2009 (diff | hist) . . (+1,131) . . N 2009 AIME II Problems (template for editing in problems)
- 19:42, 31 March 2009 (diff | hist) . . (+1,058) . . 2008 AIME I Problems/Problem 4
- 16:14, 29 March 2009 (diff | hist) . . (+1,706) . . 2008 AMC 10B Problems/Problem 24
- 06:55, 29 March 2009 (diff | hist) . . (-11) . . m 2008 AMC 10B Problems/Problem 23
- 06:41, 29 March 2009 (diff | hist) . . (+153) . . m 2008 AMC 10B Problems/Problem 16 (→Solution)
- 14:21, 22 March 2009 (diff | hist) . . (+1,685) . . 2009 AIME I Problems/Problem 8
- 04:53, 21 March 2009 (diff | hist) . . (+855) . . 2009 AIME I Problems/Problem 1
- 17:55, 15 March 2009 (diff | hist) . . (+2,144) . . 2006 AMC 10B Problems
- 17:44, 15 March 2009 (diff | hist) . . (+817) . . 2006 AMC 10B Problems/Problem 23
- 14:24, 10 March 2009 (diff | hist) . . (+2,348) . . N 2009 AMC 10B Problems/Problem 24 (New page: == Problem == The keystone arch is an ancient architectural feature. It is composed of congruent isosceles trapezoids fitted together along the non-parallel sides, as shown. The bottom si...)
- 13:59, 10 March 2009 (diff | hist) . . (+1,699) . . 2009 AMC 10B Problems/Problem 22 (→Solution)
- 11:09, 10 March 2009 (diff | hist) . . (+2,777) . . N 2009 AMC 10B Problems/Problem 22 (New page: == Problem == A cubical cake with edge length <math>2</math> inches is iced on the sides and the top. It is cut vertically into three pieces as shown in this top view, where <math>M</math...)
- 10:49, 9 March 2009 (diff | hist) . . (+2,881) . . N 2009 AMC 10B Problems/Problem 16 (New page: == Problem == Points <math>A</math> and <math>C</math> lie on a circle centered at <math>O</math>, each of <math>\overline{BA}</math> and <math>\overline{BC}</math> are tangent to the cir...)
- 19:46, 8 March 2009 (diff | hist) . . (+1,595) . . N 2009 AMC 10B Problems/Problem 18 (New page: == Problem == Rectangle <math>ABCD</math> has <math>AB=8</math> and <math>BC=6</math>. Point <math>M</math> is the midpoint of diagonal <math>\overline{AC}</math>, and <math>E</math> is o...)
- 13:50, 8 March 2009 (diff | hist) . . (+1,320) . . N 2009 AMC 10B Problems/Problem 12 (New page: == Problem == Distinct points <math>A</math>, <math>B</math>, <math>C</math>, and <math>D</math> lie on a line, with <math>AB=BC=CD=1</math>. Points <math>E</math> and <math>F</math> lie ...)
- 13:41, 8 March 2009 (diff | hist) . . (+566) . . 2009 AMC 10B Problems/Problem 21 (→Solution)
- 20:58, 7 March 2009 (diff | hist) . . (+2,003) . . 2009 AMC 10B Problems/Problem 20
- 20:26, 6 March 2009 (diff | hist) . . (+2,102) . . 2009 AMC 10B Problems/Problem 13
- 18:16, 3 March 2009 (diff | hist) . . (+13) . . m 2009 AMC 10B Problems (→Problem 18)
- 17:30, 3 March 2009 (diff | hist) . . (+781) . . N 2009 AMC 10B Problems/Problem 11 (New page: == Problem == How many <math>7</math>-digit palindromes (numbers that read the same backward as forward) can be formed using the digits <math>2</math>, <math>2</math>, <math>3</math>, <ma...)
- 17:23, 3 March 2009 (diff | hist) . . (+868) . . N 2009 AMC 10B Problems/Problem 10 (New page: == Problem == A flagpole is originally <math>5</math> meters tall. A hurricane snaps the flagpole at a point <math>x</math> meters above the ground so that the upper part, still attached ...)
- 17:06, 3 March 2009 (diff | hist) . . (+1,413) . . N 2009 AMC 10B Problems/Problem 9 (New page: == Problem == Segment <math>BD</math> and <math>AE</math> intersect at <math>C</math>, as shown, <math>AB=BC=CD=CE</math>, and <math>\angle A = \frac 52 \angle B</math>. What is the degre...)
- 14:39, 3 March 2009 (diff | hist) . . (+734) . . N 2009 AMC 10B Problems/Problem 2 (New page: == Problem == Which of the following is equal to <math>\dfrac{\frac{1}{3}-\frac{1}{4}}{\frac{1}{2}-\frac{1}{3}}</math>? <math> \text{(A) } \frac 14 \qquad \text{(B) } \frac 13 \qquad \te...)
- 09:11, 3 March 2009 (diff | hist) . . (+14,588) . . N 2009 AMC 10B Problems (New page: == Problem 1 == Each morning of her five-day workweek, Jane bought either a 50-cent muffin or a 75-cent bagel. Her total cost for the week was a whole number of dollars, How many bagels...)
- 22:05, 2 March 2009 (diff | hist) . . (+2,953) . . N 2009 AMC 12B Problems/Problem 24 (New page: == Problem == For how many values of <math>x</math> in <math>[0,\pi]</math> is <math>\sin^{ - 1}(\sin 6x) = \cos^{ - 1}(\cos x)</math>? Note: The functions <math>\sin^{ - 1} = \arcsin</mat...)
- 20:51, 2 March 2009 (diff | hist) . . (+496) . . 2009 AMC 12B Problems/Problem 19
- 20:40, 2 March 2009 (diff | hist) . . (+972) . . 2009 AMC 10B Problems/Problem 15
- 17:03, 2 March 2009 (diff | hist) . . (+599) . . 2009 AMC 12B Problems/Problem 9 (→Solution 2)
- 10:27, 2 March 2009 (diff | hist) . . (+5,785) . . N 2009 AMC 12B Problems/Problem 25 (New page: == Problem == The set <math>G</math> is defined by the points <math>(x,y)</math> with integer coordinates, <math>3\le|x|\le7</math>, <math>3\le|y|\le7</math>. How many squares of side at l...)
- 19:24, 1 March 2009 (diff | hist) . . (-25) . . m 2009 AMC 12B Problems/Problem 19
- 19:23, 1 March 2009 (diff | hist) . . (+3,004) . . N 2009 AMC 12B Problems/Problem 19 (New page: == Problem == For each positive integer <math>n</math>, let <math>f(n) = n^4 - 360n^2 + 400</math>. What is the sum of all values of <math>f(n)</math> that are prime numbers? <math>\textb...)
- 18:28, 1 March 2009 (diff | hist) . . (+1,629) . . N 2009 AMC 12B Problems/Problem 15 (New page: == Problem == Assume <math>0 < r < 3</math>. Below are five equations for <math>x</math>. Which equation has the largest solution <math>x</math>? <math>\textbf{(A)}\ 3(1 + r)^x = 7\qqua...)
- 18:09, 1 March 2009 (diff | hist) . . (+1,528) . . N 2009 AMC 12B Problems/Problem 14 (New page: == Problem == Five unit squares are arranged in the coordinate plane as shown, with the lower left corner at the origin. The slanted line, extending from <math>(a,0)</math> to <math>(3,3)<...)
- 15:00, 1 March 2009 (diff | hist) . . (+2,227) . . 2007 AMC 10A Problems/Problem 18
- 15:38, 27 February 2009 (diff | hist) . . (+2,900) . . N 2009 AMC 12B Problems/Problem 23 (New page: == Problem == A region <math>S</math> in the complex plane is defined by <cmath> S = \{x + iy: - 1\le x\le1, - 1\le y\le1\}. </cmath> A complex number <math>z = x + iy</math> is chosen uni...)
- 10:10, 27 February 2009 (diff | hist) . . (+2,577) . . N 2009 AMC 12B Problems/Problem 22 (New page: == Problem == Parallelogram <math>ABCD</math> has area <math>1,\!000,\!000</math>. Vertex <math>A</math> is at <math>(0,0)</math> and all other vertices are in the first quadrant. Vertices...)
- 09:43, 27 February 2009 (diff | hist) . . (0) . . m 2009 AMC 12B Problems/Problem 21
- 09:42, 27 February 2009 (diff | hist) . . (+1,713) . . N 2009 AMC 12B Problems/Problem 21 (New page: == Problem == Ten women sit in <math>10</math> seats in a line. All of the <math>10</math> get up and then reseat themselves using all <math>10</math> seats, each sitting in the seat she w...)
- 12:57, 25 February 2009 (diff | hist) . . (+213) . . 2009 AMC 10A Problems/Problem 21 (fixed a bug in the solution)
- 11:12, 20 February 2009 (diff | hist) . . (+3,560) . . N 2002 AMC 12A Problems/Problem 18 (New page: == Problem == Let <math>C_1</math> and <math>C_2</math> be circles defined by <math>(x-10)^2 + y^2 = 36</math> and <math>(x+15)^2 + y^2 = 81</math> respectively. What is the length of the ...)
- 08:30, 20 February 2009 (diff | hist) . . (+1,676) . . N 2002 AMC 12A Problems/Problem 21 (New page: == Problem == Consider the sequence of numbers: <math>4,7,1,8,9,7,6,\dots</math> For <math>n>2</math>, the <math>n</math>-th term of the sequence is the units digit of the sum of the two ...)
- 08:16, 20 February 2009 (diff | hist) . . (+2,085) . . N 2002 AMC 12A Problems/Problem 19 (New page: == Problem == The graph of the function <math>f</math> is shown below. How many solutions does the equation <math>f(f(x))=6</math> have? <asy> size(300,300); defaultpen(fontsize(10pt)+l...)
- 08:05, 20 February 2009 (diff | hist) . . (+1,226) . . N 2002 AMC 12A Problems/Problem 20 (New page: == Problem == Suppose that <math>a</math> and <math>b</math> are digits, not both nine and not both zero, and the repeating decimal <math>0.\overline{ab}</math> is expressed as a fraction...)
- 18:51, 18 February 2009 (diff | hist) . . (+782) . . N 2002 AMC 12A Problems/Problem 17 (New page: == Problem == Several sets of prime numbers, such as <math>\{7,83,421,659\}</math> use each of the nine nonzero digits exactly once. What is the smallest possible sum such a set of primes...)
- 18:46, 18 February 2009 (diff | hist) . . (+1,131) . . N 2002 AMC 12A Problems/Problem 24 (New page: == Problem == Find the number of ordered pairs of real numbers <math>(a,b)</math> such that <math>(a+bi)^{2002} = a-bi</math>. <math> \text{(A) }1001 \qquad \text{(B) }1002 \qquad \text{...)
- 18:41, 18 February 2009 (diff | hist) . . (+1,853) . . 2002 AMC 12A Problems
- 18:33, 18 February 2009 (diff | hist) . . (+1,846) . . N 2002 AMC 12A Problems/Problem 16 (New page: {{duplicate|2002 AMC 12A #16 and 2002 AMC 10A #24}} ==Problem== Tina randomly selects two distinct numbers from the set {1, 2, 3, 4, 5...)
- 18:32, 18 February 2009 (diff | hist) . . (-1,616) . . 2002 AMC 10A Problems/Problem 24 (Redirecting to 2002 AMC 12A Problems/Problem 16) (current)
- 18:32, 18 February 2009 (diff | hist) . . (+268) . . 2002 AMC 12A Problems (→Problem 16)
- 18:30, 18 February 2009 (diff | hist) . . (+622) . . N 2002 AMC 12A Problems/Problem 14 (New page: == Problem == For all positive integers <math>n</math>, let <math>f(n)=\log_{2002} n^2</math>. Let <math>N=f(11)+f(13)+f(14)</math>. Which of the following relations is true? <math> \tex...)
- 18:28, 18 February 2009 (diff | hist) . . (+1,049) . . N 2002 AMC 12A Problems/Problem 13 (New page: == Problem == Two different positive numbers <math>a</math> and <math>b</math> each differ from their reciprocals by <math>1</math>. What is <math>a+b</math>? <math> \text{(A) }1 \qquad ...)
- 18:15, 18 February 2009 (diff | hist) . . (+2,026) . . N 2002 AMC 12A Problems/Problem 15 (New page: {{duplicate|2002 AMC 12A #15 and 2002 AMC 10A #21}} == Problem == The mean, median, unique mode, and range of a collection of eight in...)
- 18:15, 18 February 2009 (diff | hist) . . (-1,823) . . 2002 AMC 10A Problems/Problem 21 (Redirecting to 2002 AMC 12A Problems/Problem 15) (current)
- 18:13, 18 February 2009 (diff | hist) . . (+514) . . 2002 AMC 12A Problems
- 16:09, 18 February 2009 (diff | hist) . . (-925) . . 2002 AMC 10A Problems/Problem 14 (Redirecting to 2002 AMC 12A Problems/Problem 12) (current)
- 16:09, 18 February 2009 (diff | hist) . . (+1,283) . . N 2002 AMC 12A Problems/Problem 12 (New page: {{duplicate|2002 AMC 12A #12 and 2002 AMC 10A #14}} == Problem == Both roots of the quadratic equation <math>x^2 - 63x + k = 0</math>...)
- 16:06, 18 February 2009 (diff | hist) . . (+2,416) . . N 2002 AMC 12A Problems/Problem 11 (New page: {{duplicate|2002 AMC 12A #11 and 2002 AMC 10A #12}} == Problem == Mr. Earl E. Bird gets up every day at 8:00 AM to go to work. If he d...)
- 15:55, 18 February 2009 (diff | hist) . . (-1,363) . . 2002 AMC 10A Problems/Problem 12 (Redirecting to 2002 AMC 12A Problems/Problem 11) (current)
- 15:52, 18 February 2009 (diff | hist) . . (+1,343) . . N 2002 AMC 12A Problems/Problem 9 (included proof of optimality)
- 15:37, 18 February 2009 (diff | hist) . . (-860) . . 2002 AMC 10A Problems/Problem 11 (Redirecting to 2002 AMC 12A Problems/Problem 9) (current)
- 15:35, 18 February 2009 (diff | hist) . . (-1,188) . . 2002 AMC 10A Problems/Problem 8 (Redirecting to 2002 AMC 12A Problems/Problem 8) (current)
- 15:35, 18 February 2009 (diff | hist) . . (+1,382) . . N 2002 AMC 12A Problems/Problem 8 (New page: {{duplicate|2002 AMC 12A #8 and 2002 AMC 10A #8}} ==Problem== Betsy designed a flag using blue triangles, small white squares, and a r...)
- 15:34, 18 February 2009 (diff | hist) . . (-1,165) . . 2002 AMC 10A Problems/Problem 7 (Redirecting to 2002 AMC 12A Problems/Problem 7) (current)
- 15:34, 18 February 2009 (diff | hist) . . (+1,359) . . N 2002 AMC 12A Problems/Problem 7 (New page: {{duplicate|2002 AMC 12A #7 and 2002 AMC 10A #7}} ==Problem== A <math>45^\circ</math> arc of circle A is equal in length to a <math>3...)
- 15:33, 18 February 2009 (diff | hist) . . (0) . . m 2002 AMC 12A Problems/Problem 10
- 15:32, 18 February 2009 (diff | hist) . . (0) . . m 2002 AMC 12A Problems/Problem 6
- 15:32, 18 February 2009 (diff | hist) . . (0) . . m 2002 AMC 12A Problems/Problem 3
- 15:32, 18 February 2009 (diff | hist) . . (0) . . m 2002 AMC 12A Problems/Problem 2
- 15:32, 18 February 2009 (diff | hist) . . (0) . . m 2002 AMC 12A Problems/Problem 1
- 15:30, 18 February 2009 (diff | hist) . . (-1,079) . . 2002 AMC 10A Problems/Problem 5 (Redirecting to 2002 AMC 12A Problems/Problem 5) (current)
- 15:30, 18 February 2009 (diff | hist) . . (+1,273) . . N 2002 AMC 12A Problems/Problem 5 (New page: {{duplicate|2002 AMC 12A #5 and 2002 AMC 10A #5}} ==Problem== Each of the small circles in the figure has radius one. The innermost ci...)
- 15:29, 18 February 2009 (diff | hist) . . (+4,291) . . 2002 AMC 12A Problems
- 15:28, 18 February 2009 (diff | hist) . . (+31) . . m 2002 AMC 10A Problems (→Problem 14)
- 15:26, 18 February 2009 (diff | hist) . . (+8) . . m 2002 AMC 10A Problems (→Problem 12)
- 08:04, 18 February 2009 (diff | hist) . . (+654) . . 2002 AMC 12A Problems/Problem 10
- 07:59, 18 February 2009 (diff | hist) . . (-941) . . 2002 AMC 10A Problems/Problem 17 (Redirecting to 2002 AMC 12A Problems/Problem 10) (current)
- 07:57, 18 February 2009 (diff | hist) . . (+7) . . m 2002 AMC 10A Problems (→Problem 4)
- 07:56, 18 February 2009 (diff | hist) . . (+281) . . 2002 AMC 12A Problems/Problem 6
- 07:56, 18 February 2009 (diff | hist) . . (-473) . . 2002 AMC 10A Problems/Problem 4 (Redirecting to 2002 AMC 12A Problems/Problem 6) (current)
- 07:48, 18 February 2009 (diff | hist) . . (-814) . . 2002 AMC 10A Problems/Problem 10 (Redirecting to 2002 AMC 12A Problems/Problem 1) (current)
- 07:48, 18 February 2009 (diff | hist) . . (+452) . . 2002 AMC 12A Problems/Problem 1
- 07:46, 18 February 2009 (diff | hist) . . (-620) . . 2002 AMC 10A Problems/Problem 6 (Redirecting to 2002 AMC 12A Problems/Problem 2) (current)
- 07:45, 18 February 2009 (diff | hist) . . (+240) . . 2002 AMC 12A Problems/Problem 2
- 07:44, 18 February 2009 (diff | hist) . . (+919) . . 2002 AMC 12A Problems/Problem 3
- 07:43, 18 February 2009 (diff | hist) . . (-1,552) . . 2002 AMC 10A Problems/Problem 3 (Redirecting to 2002 AMC 12A Problems/Problem 3) (current)
- 23:10, 16 February 2009 (diff | hist) . . (+1,105) . . 1985 AIME Problems/Problem 10
- 16:23, 16 February 2009 (diff | hist) . . (+2,335) . . N 2001 AMC 12 Problems/Problem 24 (New page: == Problem == In <math>\triangle ABC</math>, <math>\angle ABC=45^\circ</math>. Point <math>D</math> is on <math>\overline{BC}</math> so that <math>2\cdot BD=CD</math> and <math>\angle DAB...)
- 15:17, 16 February 2009 (diff | hist) . . (+1,683) . . N 2001 AMC 12 Problems/Problem 17 (New page: == Problem == A point <math>P</math> is selected at random from the interior of the pentagon with vertices <math>A = (0,2)</math>, <math>B = (4,0)</math>, <math>C = (2 \pi + 1, 0)</math>,...)
- 15:00, 16 February 2009 (diff | hist) . . (+1,167) . . N 2001 AMC 12 Problems/Problem 20 (New page: == Problem == Points <math>A = (3,9)</math>, <math>B = (1,1)</math>, <math>C = (5,3)</math>, and <math>D=(a,b)</math> lie in the first quadrant and are the vertices of quadrilateral <math...)
- 14:29, 16 February 2009 (diff | hist) . . (+3,121) . . N 2001 AMC 12 Problems/Problem 22 (New page: == Problem == In rectangle <math>ABCD</math>, points <math>F</math> and <math>G</math> lie on <math>AB</math> so that <math>AF=FG=GB</math> and <math>E</math> is the midpoint of <math>\ov...)
- 13:05, 16 February 2009 (diff | hist) . . (+3,034) . . N 2001 AMC 12 Problems/Problem 18 (New page: == Problem == A circle centered at <math>A</math> with a radius of 1 and a circle centered at <math>B</math> with a radius of 4 are externally tangent. A third circle is tangent to the fi...)
- 12:41, 16 February 2009 (diff | hist) . . (+340) . . 2001 AMC 12 Problems (→Problem 18)
- 04:02, 16 February 2009 (diff | hist) . . (+1,277) . . N 2001 AMC 12 Problems/Problem 15 (New page: == Problem == An insect lives on the surface of a regular tetrahedron with edges of length 1. It wishes to travel on the surface of the tetrahedron from the midpoint of one edge to the mid...)
- 03:50, 16 February 2009 (diff | hist) . . (+1,010) . . N 2001 AMC 12 Problems/Problem 14 (New page: == Problem == Given the nine-sided regular polygon <math>A_1 A_2 A_3 A_4 A_5 A_6 A_7 A_8 A_9</math>, how many distinct equilateral triangles in the plane of the polygon have at least two ...)
- 20:11, 15 February 2009 (diff | hist) . . (+1,851) . . N 2001 AMC 12 Problems/Problem 12 (New page: == Problem == How many positive integers not exceeding <math>2001</math> are multiple of <math>3</math> or <math>4</math> but not <math>5</math>? <math> \text{(A) }768 \qquad \text{(B) }...)
- 19:58, 15 February 2009 (diff | hist) . . (+1,068) . . N 2001 AMC 12 Problems/Problem 11 (New page: == Problem == A box contains exactly five chips, three red and two white. Chips are randomly removed one at a time without replacement until all the red chips are drawn or all the white c...)
- 17:56, 15 February 2009 (diff | hist) . . (+2,033) . . N 2001 AMC 12 Problems/Problem 7 (New page: == Problem 7 == A charity sells <math>140</math> benefit tickets for a total of <dollar/><math>2001</math>. Some tickets sell for full price (a whole dollar amount), and the rest sells fo...)
- 15:22, 15 February 2009 (diff | hist) . . (+1,382) . . N 2001 AMC 12 Problems/Problem 16 (New page: == Problem == A spider has one sock and one shoe for each of its eight legs. In how many different orders can the spider put on its socks and shoes, assuming that, on each leg, the sock m...)
- 15:04, 15 February 2009 (diff | hist) . . (+692) . . 2009 AMC 12A Problems/Problem 12
- 13:55, 15 February 2009 (diff | hist) . . (+15) . . m 2001 AMC 12 Problems/Problem 25 (→See Also)
- 13:55, 15 February 2009 (diff | hist) . . (+2,188) . . N 2001 AMC 12 Problems/Problem 25 (New page: == Problem == Consider sequences of positive real numbers of the form <math>x, 2000, y, \dots</math> in which every term after the first is 1 less than the product of its two immediate ne...)
- 10:58, 15 February 2009 (diff | hist) . . (+1,647) . . N 2001 AMC 12 Problems/Problem 21 (New page: == Problem == Four positive integers <math>a</math>, <math>b</math>, <math>c</math>, and <math>d</math> have a product of <math>8!</math> and satisfy: <cmath> \begin{align*} ab + a + b &...)
- 09:11, 15 February 2009 (diff | hist) . . (+1,584) . . N 2001 AMC 12 Problems/Problem 23 (New page: == Problem == A polynomial of degree four with leading coefficient 1 and integer coefficients has two zeros, both of which are integers. Which of the following can also be a zero of the p...)
- 08:10, 15 February 2009 (diff | hist) . . (+66) . . m 2001 AMC 12 Problems/Problem 19
- 08:09, 15 February 2009 (diff | hist) . . (+59) . . m 2001 AMC 12 Problems/Problem 13
- 08:08, 15 February 2009 (diff | hist) . . (+1,514) . . N 2001 AMC 12 Problems/Problem 10 (New page: == Problem == The plane is tiled by congruent squares and congruent pentagons as indicated. The percent of the plane that is enclosed by the pentagons is closest to <math> \text{(A) }50 ...)
- 08:04, 15 February 2009 (diff | hist) . . (+70) . . m 2001 AMC 12 Problems/Problem 9
- 08:03, 15 February 2009 (diff | hist) . . (+1,694) . . N 2001 AMC 12 Problems/Problem 8 (New page: == Problem == Which of the cones listed below can be formed from a <math>252^\circ</math> sector of a circle of radius <math>10</math> by aligning the two straight sides? <asy> import g...)
- 07:54, 15 February 2009 (diff | hist) . . (+8,466) . . 2001 AMC 12 Problems
- 22:14, 14 February 2009 (diff | hist) . . (+706) . . m 2009 AMC 12A Problems/Problem 13
- 19:00, 14 February 2009 (diff | hist) . . (+1,629) . . N 2009 AMC 10A Problems/Problem 17 (New page: == Problem == Rectangle <math>ABCD</math> has <math>AB=4</math> and <math>BC=3</math>. Segment <math>EF</math> is constructed through <math>B</math> so that <math>EF</math> is perpendicula...)
- 16:19, 14 February 2009 (diff | hist) . . (+3,251) . . 2008 AMC 12B Problems/Problem 20
- 15:42, 14 February 2009 (diff | hist) . . (-1,806) . . 2008 AMC 10B Problems/Problem 25 (someone made an error when transcribing the problem, fixed it) (current)
- 15:40, 14 February 2009 (diff | hist) . . (-4) . . 2008 AMC 10B Problems (→Problem 25: someone made an error when transcribing this problem, this is now fixed)
- 14:20, 14 February 2009 (diff | hist) . . (+152) . . 2009 AMC 12A Problems/Problem 20
- 14:20, 14 February 2009 (diff | hist) . . (+46) . . N 2009 AMC 10A Problems/Problem 23 (Redirecting to 2009 AMC 12A Problems/Problem 20) (current)
- 19:38, 13 February 2009 (diff | hist) . . (+1,870) . . N 2009 AMC 10A Problems/Problem 21 (New page: == Problem == Many Gothic cathedrals have windows with portions containing a ring of congruent circles that are circumscribed by a larger circle, In the figure shown, the number of smalle...)
- 09:38, 13 February 2009 (diff | hist) . . (+335) . . 2009 AMC 10A Problems (→Problem 23)
- 09:33, 13 February 2009 (diff | hist) . . (+561) . . 2009 AMC 10A Problems (→Problem 21)
- 09:31, 13 February 2009 (diff | hist) . . (+403) . . 2009 AMC 10A Problems (→Problem 19)
- 09:28, 13 February 2009 (diff | hist) . . (+351) . . 2009 AMC 10A Problems (→Problem 17)
- 09:18, 13 February 2009 (diff | hist) . . (+1,668) . . N 2009 AMC 10A Problems/Problem 10 (New page: == Problem == Triangle <math>ABC</math> has a right angle at <math>B</math>. Point <math>D</math> is the foot of the altitude from <math>B</math>, <math>AD=3</math>, and <math>DC=4</math>...)
- 09:01, 13 February 2009 (diff | hist) . . (+638) . . 2009 AMC 10A Problems (→Problem 10)
- 08:55, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 14 (Redirecting to 2009 AMC 12A Problems/Problem 8) (current)
- 08:55, 13 February 2009 (diff | hist) . . (+444) . . 2009 AMC 10A Problems (→Problem 14)
- 08:54, 13 February 2009 (diff | hist) . . (+104) . . 2009 AMC 12A Problems/Problem 8
- 08:52, 13 February 2009 (diff | hist) . . (+1,116) . . N 2009 AMC 10A Problems/Problem 16 (New page: == Problem == Let <math>a</math>, <math>b</math>, <math>c</math>, and <math>d</math> be real numbers with <math>|a-b|=2</math>, <math>|b-c|=3</math>, and <math>|c-d|=4</math>. What is the...)
- 08:47, 13 February 2009 (diff | hist) . . (+234) . . 2009 AMC 10A Problems (→Problem 16)
- 08:44, 13 February 2009 (diff | hist) . . (+1,701) . . N 2009 AMC 10A Problems/Problem 18 (New page: == Problem == At Jefferson Summer Camp, <math>60\%</math> of the children play soccer, <math>30\%</math> of the children swim, and <math>40\%</math> of the soccer players swim. To the nea...)
- 08:28, 13 February 2009 (diff | hist) . . (+261) . . 2009 AMC 10A Problems (→Problem 18)
- 08:21, 13 February 2009 (diff | hist) . . (+1,375) . . N 2009 AMC 10A Problems/Problem 20 (New page: == Problem == Andrea and Lauren are <math>20</math> kilometers apart. They bike toward one another with Andrea traveling three times as fast as Lauren, and the distance between them decre...)
- 08:13, 13 February 2009 (diff | hist) . . (+419) . . 2009 AMC 10A Problems (→Problem 20)
- 05:51, 13 February 2009 (diff | hist) . . (+1,557) . . N 2009 AMC 10A Problems/Problem 22 (New page: == Problem == Two cubical dice each have removable numbers <math>1</math> through <math>6</math>. The twelve numbers on the two dice are removed, put into a bag, then drawn one at a time ...)
- 05:45, 13 February 2009 (diff | hist) . . (+435) . . 2009 AMC 10A Problems (→Problem 22)
- 05:41, 13 February 2009 (diff | hist) . . (+2,006) . . N 2009 AMC 10A Problems/Problem 24 (New page: == Problem == Three distinct vertices of a cube are chosen at random. What is the probability that the plane determined by these three vertices contains points inside the cube? <math> \m...)
- 05:31, 13 February 2009 (diff | hist) . . (+219) . . 2009 AMC 10A Problems (→Problem 24)
- 05:26, 13 February 2009 (diff | hist) . . (+521) . . 2009 AMC 10A Problems (→Problem 6)
- 05:17, 13 February 2009 (diff | hist) . . (+46) . . N 2009 AMC 10A Problems/Problem 25 (Redirecting to 2009 AMC 12A Problems/Problem 18) (current)
- 05:17, 13 February 2009 (diff | hist) . . (+163) . . m 2009 AMC 12A Problems/Problem 18
- 05:16, 13 February 2009 (diff | hist) . . (+46) . . N 2009 AMC 10A Problems/Problem 15 (Redirecting to 2009 AMC 12A Problems/Problem 11) (current)
- 05:16, 13 February 2009 (diff | hist) . . (+1,742) . . 2009 AMC 10A Problems
- 05:15, 13 February 2009 (diff | hist) . . (+152) . . m 2009 AMC 12A Problems/Problem 11
- 05:12, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 13 (Redirecting to 2009 AMC 12A Problems/Problem 6) (current)
- 05:11, 13 February 2009 (diff | hist) . . (+151) . . m 2009 AMC 12A Problems/Problem 6
- 05:11, 13 February 2009 (diff | hist) . . (+200) . . 2009 AMC 10A Problems (→Problem 13)
- 05:10, 13 February 2009 (diff | hist) . . (+46) . . N 2009 AMC 10A Problems/Problem 12 (Redirecting to 2009 AMC 12A Problems/Problem 10) (current)
- 05:09, 13 February 2009 (diff | hist) . . (+152) . . m 2009 AMC 12A Problems/Problem 10
- 05:09, 13 February 2009 (diff | hist) . . (+561) . . 2009 AMC 10A Problems (→Problem 12)
- 05:08, 13 February 2009 (diff | hist) . . (+45) . . m 2009 AMC 12A Problems/Problem 2
- 05:08, 13 February 2009 (diff | hist) . . (+45) . . m 2009 AMC 12A Problems/Problem 4
- 05:07, 13 February 2009 (diff | hist) . . (+151) . . 2009 AMC 12A Problems/Problem 5
- 05:07, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 11 (Redirecting to 2009 AMC 12A Problems/Problem 5) (current)
- 05:07, 13 February 2009 (diff | hist) . . (+258) . . 2009 AMC 10A Problems (→Problem 11)
- 05:06, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 3 (Redirecting to 2009 AMC 12A Problems/Problem 2) (current)
- 05:06, 13 February 2009 (diff | hist) . . (+103) . . m 2009 AMC 12A Problems/Problem 2
- 05:04, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 2 (Redirecting to 2009 AMC 12A Problems/Problem 4) (current)
- 05:04, 13 February 2009 (diff | hist) . . (+103) . . 2009 AMC 12A Problems/Problem 4
- 05:00, 13 February 2009 (diff | hist) . . (+708) . . N 2009 AMC 10A Problems/Problem 9 (New page: == Problem == Positive integers <math>a</math>, <math>b</math>, and <math>2009</math>, with <math>a<b<2009</math>, form a geometric sequence with an integer ratio. What is <math>a</math>?...)
- 04:57, 13 February 2009 (diff | hist) . . (+14) . . m 2009 AMC 10A Problems (→Problem 8)
- 04:57, 13 February 2009 (diff | hist) . . (+696) . . m 2009 AMC 10A Problems/Problem 8
- 04:54, 13 February 2009 (diff | hist) . . (+2,688) . . 2009 AMC 10A Problems
- 04:46, 13 February 2009 (diff | hist) . . (+571) . . N 2009 AMC 12A Problems/Problem 2 (New page: == Problem == Which of the following is equal to <math>1 + \frac {1}{1 + \frac {1}{1 + 1}}</math>? <math>\textbf{(A)}\ \frac {5}{4} \qquad \textbf{(B)}\ \frac {3}{2} \qquad \textbf{(C)}\ ...)
- 04:44, 13 February 2009 (diff | hist) . . (+1,001) . . N 2009 AMC 12A Problems/Problem 3 (New page: == Problem == What number is one third of the way from <math>\frac14</math> to <math>\frac34</math>? <math>\textbf{(A)}\ \frac {1}{3} \qquad \textbf{(B)}\ \frac {5}{12} \qquad \textbf{(C)...)
- 04:39, 13 February 2009 (diff | hist) . . (+1,068) . . N 2009 AMC 12A Problems/Problem 4 (New page: == Problem == Four coins are picked out of a piggy bank that contains a collection of pennies, nickels, dimes, and quarters. Which of the following could <em>not</em> be the total value of...)
- 04:33, 13 February 2009 (diff | hist) . . (+2) . . m 2009 AMC 12A Problems (→Problem 4)
- 17:00, 12 February 2009 (diff | hist) . . (+1,046) . . N 2009 AMC 12A Problems/Problem 9 (New page: == Problem == Suppose that <math>f(x+3)=3x^2 + 7x + 4</math> and <math>f(x)=ax^2 + bx + c</math>. What is <math>a+b+c</math>? <math>\textbf{(A)}\ -1 \qquad \textbf{(B)}\ 0 \qquad \textbf...)
- 16:49, 12 February 2009 (diff | hist) . . (+236) . . 2009 AMC 12A Problems (→Problem 9)
- 16:45, 12 February 2009 (diff | hist) . . (+811) . . N 2009 AMC 12A Problems/Problem 7 (New page: == Problem == The first three terms of an arithmetic sequence are <math>2x - 3</math>, <math>5x - 11</math>, and <math>3x + 1</math> respectively. The <math>n</math>th term of the sequence...)
- 16:35, 12 February 2009 (diff | hist) . . (+909) . . N 2009 AMC 12A Problems/Problem 5 (New page: == Problem == One dimension of a cube is increased by <math>1</math>, another is decreased by <math>1</math>, and the third is left unchanged. The volume of the new rectangular solid is <m...)
- 16:29, 12 February 2009 (diff | hist) . . (+535) . . N 2009 AMC 12A Problems/Problem 6 (New page: == Problem == Suppose that <math>P = 2^m</math> and <math>Q = 3^n</math>. Which of the following is equal to <math>12^{mn}</math> for every pair of integers <math>(m,n)</math>? <math>\tex...)
- 16:27, 12 February 2009 (diff | hist) . . (+1,057) . . N 2009 AMC 12A Problems/Problem 8 (New page: == Problem == Four congruent rectangles are placed as shown. The area of the outer square is <math>4</math> times that of the inner square. What is the ratio of the length of the longer si...)
- 16:22, 12 February 2009 (diff | hist) . . (+1,067) . . N 2009 AMC 12A Problems/Problem 10 (New page: == Problem == In quadrilateral <math>ABCD</math>, <math>AB = 5</math>, <math>BC = 17</math>, <math>CD = 5</math>, <math>DA = 9</math>, and <math>BD</math> is an integer. What is <math>BD</...)
- 16:16, 12 February 2009 (diff | hist) . . (+1,404) . . N 2009 AMC 12A Problems/Problem 12 (New page: == Problem == How many positive integers less than <math>1000</math> are <math>6</math> times the sum of their digits? <math>\textbf{(A)}\ 0 \qquad \textbf{(B)}\ 1 \qquad \textbf{(C)}\ 2 ...)
- 16:05, 12 February 2009 (diff | hist) . . (+3,831) . . N 2009 AMC 12A Problems/Problem 13 (New page: == Problem == A ship sails <math>10</math> miles in a straight line from <math>A</math> to <math>B</math>, turns through an angle between <math>45^{\circ}</math> and <math>60^{\circ}</math...)
- 15:31, 12 February 2009 (diff | hist) . . (-7) . . m 2009 AMC 12A Problems (→Problem 13)
- 15:26, 12 February 2009 (diff | hist) . . (+2,808) . . N 2009 AMC 12A Problems/Problem 14 (New page: == Problem == A triangle has vertices <math>(0,0)</math>, <math>(1,1)</math>, and <math>(6m,0)</math>, and the line <math>y = mx</math> divides the triangle into two triangles of equal ar...)
- 14:03, 12 February 2009 (diff | hist) . . (+66) . . m 2009 AMC 12A Problems/Problem 11 (→Solution 2)
- 09:50, 12 February 2009 (diff | hist) . . (+3,035) . . N 2009 AMC 12A Problems/Problem 11 (New page: == Problem == The figures <math>F_1</math>, <math>F_2</math>, <math>F_3</math>, and <math>F_4</math> shown are the first in a sequence of figures. For <math>n\ge3</math>, <math>F_n</math> ...)
- 08:03, 12 February 2009 (diff | hist) . . (+2,098) . . N 2009 AMC 12A Problems/Problem 15 (New page: == Problem == For what value of <math>n</math> is <math>i + 2i^2 + 3i^3 + \cdots + ni^n = 48 + 49i</math>? Note: here <math>i = \sqrt { - 1}</math>. <math>\textbf{(A)}\ 24 \qquad \textbf...)
- 07:46, 12 February 2009 (diff | hist) . . (+1,704) . . N 2009 AMC 12A Problems/Problem 16 (New page: == Problem == A circle with center <math>C</math> is tangent to the positive <math>x</math> and <math>y</math>-axes and externally tangent to the circle centered at <math>(3,0)</math> with...)
- 06:58, 12 February 2009 (diff | hist) . . (+1,153) . . N 2009 AMC 12A Problems/Problem 17 (New page: == Problem == Let <math>a + ar_1 + ar_1^2 + ar_1^3 + \cdots</math> and <math>a + ar_2 + ar_2^2 + ar_2^3 + \cdots</math> be two different infinite geometric series of positive numbers with ...)
- 06:53, 12 February 2009 (diff | hist) . . (+1,519) . . N 2009 AMC 12A Problems/Problem 19 (New page: == Problem == Andrea inscribed a circle inside a regular pentagon, circumscribed a circle around the pentagon, and calculated the area of the region between the two circles. Bethany did t...)
- 06:40, 12 February 2009 (diff | hist) . . (+1,517) . . N 2009 AMC 12A Problems/Problem 18 (New page: == Problem == For <math>k > 0</math>, let <math>I_k = 10\ldots 064</math>, where there are <math>k</math> zeros between the <math>1</math> and the <math>6</math>. Let <math>N(k)</math> be...)
- 06:24, 12 February 2009 (diff | hist) . . (+4,236) . . 2006 AMC 12B Problems/Problem 22
- 18:12, 11 February 2009 (diff | hist) . . (+1,664) . . 2006 AMC 12B Problems/Problem 20
- 17:43, 11 February 2009 (diff | hist) . . (+1,095) . . 2006 AMC 12B Problems/Problem 17
- 17:30, 11 February 2009 (diff | hist) . . (+1,013) . . 2006 AMC 12B Problems/Problem 18
- 16:56, 11 February 2009 (diff | hist) . . (-140) . . m 2006 AMC 12B Problems (→Problem 14)
- 16:30, 11 February 2009 (diff | hist) . . (+4,456) . . 2006 AMC 12B Problems (three geometry problems still missing (got no pics for them))
- 15:48, 11 February 2009 (diff | hist) . . (+1,583) . . 2008 AMC 10B Problems/Problem 14
- 15:27, 11 February 2009 (diff | hist) . . (+219) . . 2008 AMC 10B Problems/Problem 19 (→Problem)
- 15:26, 11 February 2009 (diff | hist) . . (+206) . . 2008 AMC 10B Problems (→Problem 19)
- 15:25, 11 February 2009 (diff | hist) . . (+642) . . 2008 AMC 10B Problems (→Problem 14)
- 15:21, 11 February 2009 (diff | hist) . . (+1,054) . . 2008 AMC 10B Problems/Problem 8
- 15:16, 11 February 2009 (diff | hist) . . (+177) . . m 2008 AMC 10B Problems/Problem 9
- 15:15, 11 February 2009 (diff | hist) . . (+8) . . 2008 AMC 10B Problems (→Problem 9)
- 15:14, 11 February 2009 (diff | hist) . . (+440) . . 2008 AMC 10B Problems (→Problem 8)
- 15:56, 10 February 2009 (diff | hist) . . (+3,186) . . N 2004 AMC 12B Problems/Problem 14 (New page: == Problem == In <math>\triangle ABC</math>, <math>AB=13</math>, <math>AC=5</math>, and <math>BC=12</math>. Points <math>M</math> and <math>N</math> lie on <math>AC</math> and <math>BC</m...)
- 15:38, 10 February 2009 (diff | hist) . . (+979) . . 2004 AMC 12B Problems (→Problem 14)
- 15:26, 10 February 2009 (diff | hist) . . (+559) . . 2004 AMC 12B Problems (→Problem 22)
- 15:25, 10 February 2009 (diff | hist) . . (+1,226) . . N 2004 AMC 12B Problems/Problem 18 (New page: == Problem == Points <math>A</math> and <math>B</math> are on the parabola <math>y=4x^2+7x-1</math>, and the origin is the midpoint of <math>AB</math>. What is the length of <math>AB</mat...)
- 15:17, 10 February 2009 (diff | hist) . . (+338) . . 2004 AMC 12B Problems (→Problem 18)
- 15:13, 10 February 2009 (diff | hist) . . (0) . . m 2004 AMC 12B Problems/Problem 15
- 15:12, 10 February 2009 (diff | hist) . . (-1,719) . . 2004 AMC 10B Problems/Problem 17 (Redirecting to 2004 AMC 12B Problems/Problem 15) (current)
- 15:12, 10 February 2009 (diff | hist) . . (+1,918) . . N 2004 AMC 12B Problems/Problem 15 (New page: {{duplicate|2004 AMC 12B #15 and 2004 AMC 10B #17}} ==Problem== The two digits in Jack's age are the same as the digits in Bill's age...)
- 15:07, 10 February 2009 (diff | hist) . . (+339) . . 2004 AMC 12B Problems (→Problem 15)
- 15:06, 10 February 2009 (diff | hist) . . (-1,762) . . 2004 AMC 10B Problems/Problem 19 (Redirecting to 2004 AMC 12B Problems/Problem 12) (current)
- 15:06, 10 February 2009 (diff | hist) . . (+1,960) . . N 2004 AMC 12B Problems/Problem 12 (New page: {{duplicate|2004 AMC 12B #12 and 2004 AMC 10B #19}} ==Problem== In the sequence <math>2001</math>, <math>2002</math>, <math>2003</math...)
- 15:05, 10 February 2009 (diff | hist) . . (+500) . . 2004 AMC 12B Problems (→Problem 12)
- 15:03, 10 February 2009 (diff | hist) . . (+1,472) . . N 2004 AMC 12B Problems/Problem 11 (New page: == Problem == All the students in an algebra class took a <math>100</math>-point test. Five students scored <math>100</math>, each student scored at least <math>60</math>, and the mean sc...)
- 14:53, 10 February 2009 (diff | hist) . . (+391) . . 2004 AMC 12B Problems (→Problem 11)
- 14:51, 10 February 2009 (diff | hist) . . (+940) . . N 2004 AMC 12B Problems/Problem 9 (New page: == Problem == The point <math>(-3,2)</math> is rotated <math>90^\circ</math> clockwise around the origin to point <math>B</math>. Point <math>B</math> is then reflected over the line <mat...)
- 14:39, 10 February 2009 (diff | hist) . . (+405) . . 2004 AMC 12B Problems (→Problem 9)
- 14:33, 10 February 2009 (diff | hist) . . (-1,578) . . 2004 AMC 10B Problems/Problem 12 (Redirecting to 2004 AMC 12B Problems/Problem 10) (current)
- 14:33, 10 February 2009 (diff | hist) . . (+1,775) . . N 2004 AMC 12B Problems/Problem 10 (New page: {{duplicate|2004 AMC 12B #10 and 2004 AMC 10B #12}} ==Problem== An annulus is the region between two concentric circles. The concentri...)
- 14:30, 10 February 2009 (diff | hist) . . (+1,176) . . 2004 AMC 12B Problems (→Problem 10)
- 18:22, 9 February 2009 (diff | hist) . . (+3,236) . . N 2004 AMC 10B Problems/Problem 25 (New page: == Problem == A circle of radius <math>1</math> is internally tangent to two circles of radius <math>2</math> at points <math>A</math> and <math>B</math>, where <math>AB</math> is a diame...)
- 18:05, 9 February 2009 (diff | hist) . . (+1,161) . . m 2004 AMC 10B Problems (→Problem 25)
- 17:44, 9 February 2009 (diff | hist) . . (+2,339) . . N 2004 AMC 10B Problems/Problem 20 (New page: == Problem == In <math>\triangle ABC</math> points <math>D</math> and <math>E</math> lie on <math>BC</math> and <math>AC</math>, respectively. If <math>AD</math> and <math>BE</math> inter...)
- 17:29, 9 February 2009 (diff | hist) . . (+796) . . 2004 AMC 10B Problems (→Problem 20)
- 14:59, 9 February 2009 (diff | hist) . . (+6) . . m 2005 AMC 10B Problems/Problem 21 (→Solution)
- 16:12, 7 February 2009 (diff | hist) . . (+2) . . m 2004 AMC 10B Problems/Problem 18 (→Solution)
- 16:04, 7 February 2009 (diff | hist) . . (+188) . . m 2004 AMC 10B Problems (→Problem 18)
- 16:04, 7 February 2009 (diff | hist) . . (+2,846) . . N 2004 AMC 10B Problems/Problem 18 (New page: == Problem == In the right triangle <math>\triangle ACE</math>, we have <math>AC=12</math>, <math>CE=16</math>, and <math>EA=20</math>. Points <math>B</math>, <math>D</math>, and <math>F<...)
- 15:52, 7 February 2009 (diff | hist) . . (+896) . . 2004 AMC 10B Problems (→Problem 18)
- 15:40, 7 February 2009 (diff | hist) . . (+1,624) . . N 2004 AMC 10B Problems/Problem 12 (New page: ==Problem== An annulus is the region between two concentric circles. The concentric circles in the figure have radii <math>b</math> and <math>c</math>, with <math>b>c</math>. Let <math>O...)
- 15:37, 7 February 2009 (diff | hist) . . (+1,176) . . 2004 AMC 10B Problems (→Problem 12)
- 13:50, 7 February 2009 (diff | hist) . . (+1,081) . . N 2004 AMC 10B Problems/Problem 11 (New page: == Problem == Two eight-sided dice each have faces numbered 1 through 8. When the dice are rolled, each face has an equal probability of appearing on the top. What is the probability that...)
- 13:40, 7 February 2009 (diff | hist) . . (+150) . . 2004 AMC 12B Problems/Problem 8
- 13:39, 7 February 2009 (diff | hist) . . (+45) . . N 2004 AMC 10B Problems/Problem 10 (Redirecting to 2004 AMC 12B Problems/Problem 8) (current)
- 13:38, 7 February 2009 (diff | hist) . . (+149) . . 2004 AMC 12B Problems/Problem 7
- 13:38, 7 February 2009 (diff | hist) . . (+45) . . N 2004 AMC 10B Problems/Problem 9 (Redirecting to 2004 AMC 12B Problems/Problem 7) (current)
- 13:37, 7 February 2009 (diff | hist) . . (+45) . . N 2004 AMC 10B Problems/Problem 8 (Redirecting to 2004 AMC 12B Problems/Problem 6) (current)
- 13:37, 7 February 2009 (diff | hist) . . (+148) . . 2004 AMC 12B Problems/Problem 6
- 13:36, 7 February 2009 (diff | hist) . . (+45) . . N 2004 AMC 10B Problems/Problem 7 (Redirecting to 2004 AMC 12B Problems/Problem 5) (current)
- 13:35, 7 February 2009 (diff | hist) . . (+147) . . 2004 AMC 12B Problems/Problem 5
- 13:32, 7 February 2009 (diff | hist) . . (+908) . . N 2004 AMC 10B Problems/Problem 6 (New page: ==Problem== Which of the following numbers is a perfect square? <math> \mathrm{(A) \ } 98! \cdot 99! \qquad \mathrm{(B) \ } 98! \cdot 100! \qquad \mathrm{(C) \ } 99! \cdot 100! \qquad \m...)
- 13:27, 7 February 2009 (diff | hist) . . (+20) . . m 2004 AMC 10B Problems (→Problem 6)
- 13:26, 7 February 2009 (diff | hist) . . (+432) . . 2004 AMC 10B Problems/Problem 1
- 13:22, 7 February 2009 (diff | hist) . . (-75) . . 2004 AMC 10B Problems/Problem 5 (Redirecting to 2004 AMC 12B Problems/Problem 2) (current)
- 13:21, 7 February 2009 (diff | hist) . . (+157) . . 2004 AMC 12B Problems/Problem 2
- 13:14, 7 February 2009 (diff | hist) . . (+1,503) . . 2004 AMC 10B Problems/Problem 4 (previous solution was wrong!)
- 12:57, 7 February 2009 (diff | hist) . . (+1,678) . . 2002 AIME I Problems/Problem 11
- 20:16, 4 February 2009 (diff | hist) . . (+418) . . Heron's Formula (→External Links)
- 05:05, 3 February 2009 (diff | hist) . . (-13) . . m 2006 Cyprus MO/Lyceum/Problem 26 (current)
- 05:05, 3 February 2009 (diff | hist) . . (-13) . . m 2006 Cyprus MO/Lyceum/Problem 25 (current)
- 05:04, 3 February 2009 (diff | hist) . . (-13) . . m 2006 Cyprus MO/Lyceum/Problem 27 (current)
- 05:04, 3 February 2009 (diff | hist) . . (-13) . . m 2006 Cyprus MO/Lyceum/Problem 28 (current)
- 05:04, 3 February 2009 (diff | hist) . . (-13) . . m 2006 Cyprus MO/Lyceum/Problem 29
- 05:04, 3 February 2009 (diff | hist) . . (-14) . . m 2006 Cyprus MO/Lyceum/Problem 30 (current)
- 19:10, 2 February 2009 (diff | hist) . . (-2) . . m 2008 AMC 10B Problems/Problem 14
- 19:09, 2 February 2009 (diff | hist) . . (-2) . . m 2008 AMC 10B Problems/Problem 23
- 19:09, 2 February 2009 (diff | hist) . . (-2) . . m 2008 AMC 10B Problems/Problem 8
- 19:07, 2 February 2009 (diff | hist) . . (+1) . . N User talk:Misof (New page: .)
- 19:06, 2 February 2009 (diff | hist) . . (+83) . . N User:Misof (New page: hello should you want to tell me something, use the discussion page to this one :)) (current)
- 19:04, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 10
- 19:04, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 13
- 19:04, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 14
- 19:04, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 15
- 19:03, 2 February 2009 (diff | hist) . . (-2) . . 2006 AMC 12B Problems/Problem 16
- 19:03, 2 February 2009 (diff | hist) . . (-2) . . 2006 AMC 12B Problems/Problem 17
- 19:03, 2 February 2009 (diff | hist) . . (-2) . . 2006 AMC 12B Problems/Problem 18
- 19:03, 2 February 2009 (diff | hist) . . (-2) . . 2006 AMC 12B Problems/Problem 19
- 19:02, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 20
- 19:02, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 22 (rationale behind these edits: problems with no statement should NOT be on the list of problems that need a solution)
- 19:01, 2 February 2009 (diff | hist) . . (-2) . . m 2006 AMC 12B Problems/Problem 23
- 19:00, 2 February 2009 (diff | hist) . . (+12) . . m 2006 AMC 12B Problems/Problem 25 (→Problem)
- 19:00, 2 February 2009 (diff | hist) . . (+12) . . m 2005 AMC 12B Problems/Problem 9 (→Problem)
- 19:00, 2 February 2009 (diff | hist) . . (-2) . . 2006 AMC 12B Problems/Problem 24
- 18:59, 2 February 2009 (diff | hist) . . (-14) . . m 2006 AMC 12B Problems/Problem 25
- 18:57, 2 February 2009 (diff | hist) . . (-12) . . m 2005 AMC 12B Problems/Problem 9
- 16:05, 2 February 2009 (diff | hist) . . (+1,569) . . 2006 USAMO Problems/Problem 2
- 14:43, 2 February 2009 (diff | hist) . . (+319) . . m 1962 IMO Problems/Problem 2 (current)
- 14:39, 2 February 2009 (diff | hist) . . (+2,219) . . 1962 IMO Problems/Problem 2
- 13:33, 2 February 2009 (diff | hist) . . (+1,283) . . 2002 AMC 10B Problems/Problem 17
- 07:46, 2 February 2009 (diff | hist) . . (+345) . . 2002 AMC 10B Problems/Problem 4
- 07:41, 2 February 2009 (diff | hist) . . (+105) . . m 2002 AMC 10B Problems/Problem 17 (added proper templates only)
- 07:40, 2 February 2009 (diff | hist) . . (+845) . . 2002 AMC 10B Problems/Problem 16
- 07:35, 2 February 2009 (diff | hist) . . (+636) . . 2002 AMC 10B Problems/Problem 13
- 07:30, 2 February 2009 (diff | hist) . . (+772) . . 2002 AMC 10B Problems/Problem 12
- 07:17, 2 February 2009 (diff | hist) . . (+1,112) . . 2002 AMC 10B Problems (copied problem statements from their individual pages)
- 20:03, 31 January 2009 (diff | hist) . . (+1,293) . . 1976 USAMO Problems/Problem 1
- 16:22, 31 January 2009 (diff | hist) . . (+411) . . 1962 IMO Problems/Problem 1
- 13:37, 31 January 2009 (diff | hist) . . (0) . . m 1973 USAMO Problems/Problem 3 (→Solution)
- 13:37, 31 January 2009 (diff | hist) . . (+946) . . 1973 USAMO Problems/Problem 3
- 13:15, 31 January 2009 (diff | hist) . . (+962) . . 1972 USAMO Problems/Problem 1
- 01:52, 31 January 2009 (diff | hist) . . (+456) . . Mock AIME 4 2006-2007 Problems/Problem 14 (current)
- 01:41, 31 January 2009 (diff | hist) . . (+1,900) . . Mock AIME 4 2006-2007 Problems/Problem 6 (current)
- 01:01, 31 January 2009 (diff | hist) . . (+319) . . Pigeonhole Principle/Solutions (→O4)
- 00:48, 31 January 2009 (diff | hist) . . (+1,457) . . Mock AIME 3 Pre 2005 Problems/Problem 10
- 12:27, 30 January 2009 (diff | hist) . . (+12) . . m Mock AIME 1 2006-2007 Problems/Problem 13
- 12:26, 30 January 2009 (diff | hist) . . (+2,754) . . Mock AIME 1 2006-2007 Problems/Problem 13
- 01:48, 30 January 2009 (diff | hist) . . (+1,194) . . 2008 AMC 10B Problems/Problem 25
- 00:04, 30 January 2009 (diff | hist) . . (+1) . . m 2003 AIME II Problems/Problem 15
- 00:03, 30 January 2009 (diff | hist) . . (+1,789) . . 2003 AIME II Problems/Problem 15
- 23:08, 29 January 2009 (diff | hist) . . (+1,071) . . 1990 AHSME Problems/Problem 26
- 14:50, 29 January 2009 (diff | hist) . . (+48) . . 1987 AJHSME Problems/Problem 1
- 14:49, 29 January 2009 (diff | hist) . . (+71) . . 1987 AJHSME Problems/Problem 2
- 14:47, 29 January 2009 (diff | hist) . . (+216) . . 1987 AJHSME Problems/Problem 3
- 14:42, 29 January 2009 (diff | hist) . . (+95) . . 1987 AJHSME Problems/Problem 4 (→Solution)
- 14:41, 29 January 2009 (diff | hist) . . (+120) . . 1987 AJHSME Problems/Problem 5
- 14:26, 29 January 2009 (diff | hist) . . (+645) . . 2007 Cyprus MO/Lyceum/Problem 15 (current)
- 08:59, 29 January 2009 (diff | hist) . . (+1,096) . . 2007 Cyprus MO/Lyceum/Problem 15
- 08:42, 29 January 2009 (diff | hist) . . (+1,532) . . 2008 AMC 10B Problems/Problem 19
- 00:08, 29 January 2009 (diff | hist) . . (0) . . m 2003 AMC 12B Problems/Problem 24
- 00:06, 29 January 2009 (diff | hist) . . (+3,391) . . 2003 AMC 12B Problems/Problem 24
- 22:58, 28 January 2009 (diff | hist) . . (-18) . . m 2003 AIME II Problems/Problem 12
- 22:58, 28 January 2009 (diff | hist) . . (+1,889) . . 2003 AIME II Problems/Problem 12
- 22:04, 28 January 2009 (diff | hist) . . (+661) . . 2002 AMC 10B Problems/Problem 8
- 22:01, 28 January 2009 (diff | hist) . . (+1,488) . . 2002 AIME II Problems/Problem 8
- 18:20, 28 January 2009 (diff | hist) . . (+2,347) . . N 2007 Alabama ARML TST Problems/Problem 10 (New page: ==Problem== Andrew and Patri each have a deck of cards. Andrew draws two cards from his deck, both of which turn out to be queens. Patri draws two cards from his deck, one of which is an ...) (current)
- 17:55, 28 January 2009 (diff | hist) . . (+2,407) . . N 2007 Alabama ARML TST Problems/Problem 8 (New page: ==Problem== Krugman is a little odd. Really odd actually. He has a collection of Massachusetts state quarters and New Hampshire state quarters. All 29 of his Massachusetts quarters are kep...) (current)
- 17:35, 28 January 2009 (diff | hist) . . (+1) . . m 2007 Alabama ARML TST Problems/Problem 7 (current)
- 13:02, 28 January 2009 (diff | hist) . . (+77) . . 2006 Canadian MO Problems (→Problem 3) (current)
- 12:51, 28 January 2009 (diff | hist) . . (+2,169) . . N 2007 Alabama ARML TST Problems/Problem 13 (New page: ==Problem== Before he gets out of bed every morning, Calvin the Compulsive plays a game with a fair coin. He flips it until ''either'' he flips four consecutive heads ''or'' he flips si...)
- 11:33, 28 January 2009 (diff | hist) . . (+16) . . m 2007 Alabama ARML TST Problems (→Problem 11) (current)
- 01:12, 28 January 2009 (diff | hist) . . (+1,916) . . 2006 Alabama ARML TST Problems/Problem 15 (current)
- 12:49, 26 January 2009 (diff | hist) . . (+1,031) . . 2005 Alabama ARML TST Problems/Problem 14 (→Solution)
- 12:06, 26 January 2009 (diff | hist) . . (-8) . . m 2005 Alabama ARML TST Problems/Problem 2 (→Solution) (current)
- 08:40, 26 January 2009 (diff | hist) . . (+1,337) . . 2007 Alabama ARML TST Problems/Problem 11 (alternate solution and clarification) (current)
- 08:09, 26 January 2009 (diff | hist) . . (+161) . . 2007 Alabama ARML TST Problems/Problem 14 (→Step 5: Handling the remaining part of p: fixed a small mistake) (current)
- 23:38, 25 January 2009 (diff | hist) . . (+3,544) . . N 2007 Alabama ARML TST Problems/Problem 14 (New page: ==Problem== Find the sum of the ''real'' roots of <cmath>x^6+145x^4-2007x^3+145x^2+1=0.</cmath> ==Solution== === Step 1: using the symmetry === Let <math>p(x)=x^6+145x^4-2007x^3+145x^2...)
- 19:56, 25 January 2009 (diff | hist) . . (+798) . . 1986 AJHSME Problems/Problem 21
- 19:47, 25 January 2009 (diff | hist) . . (+545) . . 1986 AJHSME Problems/Problem 23
- 19:43, 25 January 2009 (diff | hist) . . (+497) . . 1986 AJHSME Problems/Problem 24
- 19:36, 25 January 2009 (diff | hist) . . (+293) . . 1986 AJHSME Problems/Problem 20
- 19:30, 25 January 2009 (diff | hist) . . (+409) . . 1986 AJHSME Problems/Problem 19
- 16:33, 25 January 2009 (diff | hist) . . (+581) . . 2008 AMC 10B Problems/Problem 20
- 16:25, 25 January 2009 (diff | hist) . . (+439) . . 2008 AMC 10B Problems/Problem 7
- 16:19, 25 January 2009 (diff | hist) . . (+160) . . 2008 AMC 10B Problems
- 16:16, 25 January 2009 (diff | hist) . . (+143) . . m 2008 AMC 10B Problems (→Problem 6)
- 16:15, 25 January 2009 (diff | hist) . . (+5,533) . . 2008 AMC 10B Problems (copied problem statements from their individual pages)
- 16:13, 25 January 2009 (diff | hist) . . (+136) . . m 2008 AMC 10B Problems/Problem 25 (→Problem)
- 16:12, 25 January 2009 (diff | hist) . . (+148) . . m 2008 AMC 10B Problems/Problem 24 (→Problem)
- 16:11, 25 January 2009 (diff | hist) . . (+247) . . m 2008 AMC 10B Problems/Problem 22
- 16:07, 25 January 2009 (diff | hist) . . (+196) . . 2008 AMC 10B Problems/Problem 21
- 16:05, 25 January 2009 (diff | hist) . . (+278) . . m 2008 AMC 10B Problems/Problem 20 (→Problem)
- 16:04, 25 January 2009 (diff | hist) . . (+37) . . m 2008 AMC 10B Problems/Problem 19 (→Problem)
- 16:02, 25 January 2009 (diff | hist) . . (+208) . . m 2008 AMC 10B Problems/Problem 18
- 15:59, 25 January 2009 (diff | hist) . . (+1) . . m 2008 AMC 10B Problems/Problem 16 (→Problem)
- 15:58, 25 January 2009 (diff | hist) . . (+135) . . m 2008 AMC 10B Problems/Problem 15 (→Problem)
- 15:57, 25 January 2009 (diff | hist) . . (+83) . . 2008 AMC 10B Problems/Problem 12 (→Problem)
- 15:53, 25 January 2009 (diff | hist) . . (+1,843) . . N 2004 AMC 10B Problems/Problem 13 (New page: == Problem == In the United States, coins have the following thicknesses: penny, <math>1.55</math> mm; nickel, <math>1.95</math> mm; dime, <math>1.35</math> mm; quarter, <math>1.75</math> ...)
- 20:13, 24 January 2009 (diff | hist) . . (+1,193) . . N 2004 AMC 10B Problems/Problem 14 (New page: == Problem == A bag initially contains red marbles and blue marbles only, with more blue than red. Red marbles are added to the bag until only <math>\frac{1}{3}</math> of the marbles in t...)
- 19:34, 24 January 2009 (diff | hist) . . (+1,289) . . N 2004 AMC 10B Problems/Problem 22 (New page: ==Problem== A triangle with sides of 5, 12, and 13 has both an inscribed and a circumscribed circle. What is the distance between the centers of those circles? <math> \mathrm{(A) \ } \fra...)
- 18:50, 24 January 2009 (diff | hist) . . (+4) . . m 2004 AMC 10B Problems/Problem 15
- 18:50, 24 January 2009 (diff | hist) . . (+1,339) . . N 2004 AMC 10B Problems/Problem 15 (New page: ==Problem== Patty has <math>20</math> coins consisting of nickels and dimes. If her nickels were dimes and her dimes were nickels, she would have <math>70</math> cents more. How much are ...)
- 18:13, 24 January 2009 (diff | hist) . . (+1,497) . . N 2004 AMC 10B Problems/Problem 16 (New page: == Problem == Three circles of radius <math>1</math> are externally tangent to each other and internally tangent to a larger circle. What is the radius of the large circle? <math> \mathr...)
- 16:27, 24 January 2009 (diff | hist) . . (+1,765) . . N 2004 AMC 10B Problems/Problem 17 (New page: ==Problem== The two digits in Jack's age are the same as the digits in Bill's age, but in reverse order. In five years Jack will be twice as old as Bill will be then. What is the differen...)
- 16:15, 24 January 2009 (diff | hist) . . (-3) . . m 2004 AMC 10B Problems (→Problem 17)
- 15:58, 24 January 2009 (diff | hist) . . (+4) . . m 2004 AMC 10B Problems/Problem 19
- 15:58, 24 January 2009 (diff | hist) . . (+1,804) . . N 2004 AMC 10B Problems/Problem 19 (New page: ==Problem== In the sequence <math>2001</math>, <math>2002</math>, <math>2003</math>, <math>\ldots</math> , each term after the third is found by subtracting the previous term from the sum...)
- 15:42, 24 January 2009 (diff | hist) . . (0) . . m 2004 AMC 10B Problems (→Problem 19)
- 15:39, 24 January 2009 (diff | hist) . . (+1,469) . . N 2004 AMC 10B Problems/Problem 21 (New page: ==Problem== Let <math>1</math>; <math>4</math>; <math>\ldots</math> and <math>9</math>; <math>16</math>; <math>\ldots</math> be two arithmetic progressions. The set <math>S</math> is the ...)
- 15:20, 24 January 2009 (diff | hist) . . (+1,970) . . N 2004 AMC 10B Problems/Problem 23 (New page: ==Problem== Each face of a cube is painted either red or blue, each with probability 1/2. The color of each face is determined independently. What is the probability that the painted cube ...)
- 15:02, 24 January 2009 (diff | hist) . . (+675) . . N 2004 AMC 10B Problems/Problem 3 (New page: ==Problem== At each basketball practice last week, Jenny made twice as many free throws as she made at the previous practice. At her fifth practice she made 48 free throws. How many free t...)
- 15:01, 24 January 2009 (diff | hist) . . (+538) . . N 2004 AMC 10B Problems/Problem 2 (New page: ==Problem== How many two-digit positive integers have at least one 7 as a digit? <math> \mathrm{(A) \ } 10 \qquad \mathrm{(B) \ } 18\qquad \mathrm{(C) \ } 19 \qquad \mathrm{(D) \ } 20\qq...)
- 14:54, 24 January 2009 (diff | hist) . . (+701) . . 2003 AMC 10A Problems/Problem 25 (formatting and notes)
- 14:38, 24 January 2009 (diff | hist) . . (+525) . . 2002 AMC 10B Problems/Problem 11
- 14:27, 24 January 2009 (diff | hist) . . (+1,548) . . 2002 AMC 10A Problems/Problem 25 (alternate solution)
- 13:38, 24 January 2009 (diff | hist) . . (+739) . . 2002 AMC 10A Problems/Problem 21 (→Solution)
- 13:15, 24 January 2009 (diff | hist) . . (+214) . . m 2002 AMC 10A Problems/Problem 15
- 12:52, 24 January 2009 (diff | hist) . . (+13) . . m 2002 AMC 10A Problems/Problem 10 (→Solution 1)
- 12:51, 24 January 2009 (diff | hist) . . (+34) . . 2002 AMC 10A Problems/Problem 10 (fixed a mistake)
- 12:37, 24 January 2009 (diff | hist) . . (+913) . . 2002 AMC 10A Problems/Problem 3
- 12:19, 24 January 2009 (diff | hist) . . (+382) . . m 2002 AMC 10A Problems/Problem 2
- 12:10, 24 January 2009 (diff | hist) . . (+1,341) . . 2001 AMC 10 Problems
- 11:48, 24 January 2009 (diff | hist) . . (+2) . . m 2000 AMC 10 Problems/Problem 18 (→Solution)
- 11:48, 24 January 2009 (diff | hist) . . (+1,275) . . 2000 AMC 10 Problems/Problem 18 (→Solution)
- 11:21, 24 January 2009 (diff | hist) . . (-1) . . m 2000 AMC 10 Problems/Problem 11 (→Solution)
- 11:16, 24 January 2009 (diff | hist) . . (+13) . . m 2000 AMC 10 Problems/Problem 8 (→Solution)
- 11:16, 24 January 2009 (diff | hist) . . (+22) . . m 2000 AMC 10 Problems/Problem 8 (→Solution)
- 11:03, 24 January 2009 (diff | hist) . . (+70) . . m 2000 AMC 10 Problems/Problem 5 (→Solution)
- 12:00, 15 January 2009 (diff | hist) . . (+1,887) . . N 1999 AHSME Problems/Problem 16 (New page: == Problem == What is the radius of a circle inscribed in a rhombus with diagonals of length <math>10</math> and <math>24</math>? <math> \mathrm{(A) \ }4 \qquad \mathrm{(B) \ }\frac {58}...)
- 11:39, 15 January 2009 (diff | hist) . . (+602) . . 1995 AHSME Problems/Problem 27 (→Solution)
- 11:28, 15 January 2009 (diff | hist) . . (+2,815) . . N 1999 AHSME Problems/Problem 22 (New page: == Problem == The graphs of <math>y = -|x-a| + b</math> and <math>y = |x-c| + d</math> intersect at points <math>(2,5)</math> and <math>(8,3)</math>. Find <math>a+c</math>. <math> \mathrm...)
- 07:37, 12 January 2009 (diff | hist) . . (+1,941) . . N 1999 AHSME Problems/Problem 23 (New page: == Problem == The equiangular convex hexagon <math>ABCDEF</math> has <math>AB = 1, BC = 4, CD = 2,</math> and <math>DE = 4.</math> The area of the hexagon is <math> \mathrm{(A) \ } \frac ...)
- 13:13, 11 January 2009 (diff | hist) . . (+2,258) . . N 1999 AHSME Problems/Problem 26 (New page: ==Problem== Three non-overlaping regular plane polygons, at least two of which are congruent, all have sides of length <math>1</math>. The polygons meet at a point <math>A</math> in such ...)
- 12:25, 11 January 2009 (diff | hist) . . (+367) . . 2000 AMC 10 Problems/Problem 19
- 12:20, 11 January 2009 (diff | hist) . . (+11) . . m 2000 AMC 10 Problems/Problem 20 (→Solution)
- 12:18, 11 January 2009 (diff | hist) . . (+1,100) . . 2000 AMC 10 Problems/Problem 20
- 11:41, 11 January 2009 (diff | hist) . . (+1,726) . . 2000 AMC 10 Problems/Problem 25
- 11:00, 11 January 2009 (diff | hist) . . (+1,532) . . 2000 AMC 10 Problems/Problem 22
- 10:51, 11 January 2009 (diff | hist) . . (+2,144) . . 2000 AMC 10 Problems/Problem 21
- 10:28, 11 January 2009 (diff | hist) . . (+1,905) . . 2000 AMC 10 Problems/Problem 23
- 09:53, 11 January 2009 (diff | hist) . . (+1,027) . . 2000 AMC 10 Problems/Problem 24
- 18:00, 7 January 2009 (diff | hist) . . (+1,146) . . N 1999 AHSME Problems/Problem 9 (New page: == Problem == Before Ashley started a three-hour drive, her car's odometer reading was 29792, a palindrome. (A palindrome is a number that reads te same way from left to right as it does f...)
- 17:37, 7 January 2009 (diff | hist) . . (+1,545) . . N 1999 AHSME Problems/Problem 17 (New page: == Problem == Let <math>P(x)</math> be a polynomial such that when <math>P(x)</math> is divided by <math>x-19</math>, the remaidner is <math>99</math>, and when <math>P(x)</math> is divide...)
- 16:44, 7 January 2009 (diff | hist) . . (+1,835) . . N 1999 AHSME Problems/Problem 18 (New page: == Problem == How many zeros does <math>f(x) = \cos(\log x)</math> have on the interval <math>0 < x < 1</math>? <math> \mathrm{(A) \ } 0 \qquad \mathrm{(B) \ } 1 \qquad \mathrm{(C) \ } 2 ...)
- 16:00, 7 January 2009 (diff | hist) . . (+902) . . N 1999 AHSME Problems/Problem 20 (New page: == Problem == The sequence <math>a_{1},a_{2},a_{3},\ldots</math> statisfies <math>a_{1} = 19,a_{9} = 99</math>, and, for all <math>n\geq 3</math>, <math>a_{n}</math> is the arithmetic mean...)
- 15:10, 7 January 2009 (diff | hist) . . (+1,454) . . N 1999 AHSME Problems/Problem 21 (New page: == Problem == A circle is circumscribed about a triangle with sides <math>20,21,</math> and <math>29,</math> thus dividing the interior of the circle into four regions. Let <math>A,B,</mat...)
- 15:03, 7 January 2009 (diff | hist) . . (+947) . . N 1999 AHSME Problems/Problem 24 (New page: == Problem == Six points on a circle are given. Four of the chords joining pairs of the six points are selected at random. What is the probability that the four chords form a convex quadri...)
- 14:58, 7 January 2009 (diff | hist) . . (0) . . m 1999 AHSME Problems (→Problem 24)
- 14:05, 7 January 2009 (diff | hist) . . (+2,469) . . N 1999 AHSME Problems/Problem 28 (New page: == Problem == Let <math>x_1, x_2, \ldots , x_n</math> be a sequence of integers such that (i) <math>-1 \le x_i \le 2</math> for <math>i = 1,2, \ldots n</math> (ii) <math>x_1 + \cdots + x_...)
- 13:28, 7 January 2009 (diff | hist) . . (0) . . m 1999 AHSME Problems (→Problem 28)
- 13:12, 7 January 2009 (diff | hist) . . (+914) . . N 1998 AHSME Problems/Problem 11 (New page: == Problem == Let <math>R</math> be a rectangle. How many circles in the plane of <math>R</math> have a diameter both of whose endpoints are vertices of <math>R</math>? <math> \mathrm{(A)...)
- 12:59, 7 January 2009 (diff | hist) . . (+1,242) . . N 1998 AHSME Problems/Problem 13 (New page: == Problem == Walter rolls four standard six-sided dice and finds that the product of the numbers of the upper faces is <math>144</math>. Which of he following could '''not ''' be the sum ...)
- 12:55, 7 January 2009 (diff | hist) . . (0) . . 1998 AHSME Problems (fixed a bug in the options)
- 12:47, 7 January 2009 (diff | hist) . . (+1,099) . . N 1998 AHSME Problems/Problem 18 (New page: == Problem == A right circular cone of volume <math>A</math>, a right circular cylinder of volume <math>M</math>, and a sphere of volume <math>C</math> all have the same radius, and the co...)
- 12:08, 7 January 2009 (diff | hist) . . (+1,843) . . N 1998 AHSME Problems/Problem 19 (New page: == Problem == How many triangles have area <math>10</math> and vertices at <math>(-5,0),(5,0)</math> and <math>(5\cos \theta, 5\sin \theta)</math> for some angle <math>\theta</math>? <mat...)
- 11:52, 7 January 2009 (diff | hist) . . (+2,095) . . N 1998 AHSME Problems/Problem 20 (New page: == Problem == Three cards, each with a positive integer written on it, are lying face-down on a table. Casey, Stacy, and Tracy are told that : (a) the numbers are all different, : (b) the...)
- 11:30, 7 January 2009 (diff | hist) . . (+1,195) . . N 1998 AHSME Problems/Problem 21 (New page: == Problem == In an <math>h-</math> meter race, Sunny is exactly <math>d</math> meters ahead of Windy when Sunny finishes the race. The next time they race, Sunny sportingly starts <math>d...)
- 11:23, 7 January 2009 (diff | hist) . . (0) . . m 1998 AHSME Problems (→Problem 21)
- 11:19, 7 January 2009 (diff | hist) . . (+1,222) . . N 1998 AHSME Problems/Problem 23 (New page: == Problem == The graphs of <math>x^2 + y^2 = 4 + 12x + 6y</math> and <math>x^2 + y^2 = k + 4x + 12y</math> intersect when <math>k</math> satisfies <math>a \le k \le b</math>, and for no o...)
- 10:56, 7 January 2009 (diff | hist) . . (+3,155) . . N 1998 AHSME Problems/Problem 25 (New page: == Problem == A piece of graph paper is folded once so that <math>(0,2)</math> is matched with <math>(4,0)</math>, and <math>(7,3)</math> is matched with <math>(m,n)</math>. Find <math>m+n...)
- 09:23, 7 January 2009 (diff | hist) . . (+2,909) . . N 1998 AHSME Problems/Problem 30 (New page: == Problem == For each positive integer <math>n</math>, let <center><math>a_n = \frac{(n+9)!}{(n-1)!}</math></center> Let <math>k</math> denote the smallest positive integer for which t...)
- 08:40, 7 January 2009 (diff | hist) . . (+345) . . 1995 AHSME Problems/Problem 30 (→Solution)
- 08:34, 7 January 2009 (diff | hist) . . (+897) . . 1995 AHSME Problems/Problem 30 (→Solution)
- 16:52, 6 January 2009 (diff | hist) . . (+79) . . N Talk:2000 AMC 12 Problems/Problem 22 (bug report) (current)
- 16:29, 6 January 2009 (diff | hist) . . (+707) . . 2002 AMC 12B Problems/Problem 12 (alternate solution)
- 16:20, 6 January 2009 (diff | hist) . . (+512) . . 2002 AMC 12B Problems/Problem 9 (alternate solution)
- 16:14, 6 January 2009 (diff | hist) . . (+638) . . 2002 AMC 12B Problems/Problem 8
- 10:58, 6 January 2009 (diff | hist) . . (-311) . . 2003 AMC 12A Problems/Problem 21 (shortened)
- 10:32, 6 January 2009 (diff | hist) . . (+575) . . N 2004 AMC 12B Problems/Problem 8 (New page: == Problem == A grocer makes a display of cans in which the top row has one can and each lower row has two more cans than the row above it. If the display contains 100 cans, how many rows ...)
- 10:30, 6 January 2009 (diff | hist) . . (+733) . . N 2004 AMC 12B Problems/Problem 7 (New page: == Problem 7 == A square has sides of length 10, and a circle centered at one of its vertices has radius 10. What is the area of the union of the regions enclosed by the square and the cir...)
- 10:26, 6 January 2009 (diff | hist) . . (-4) . . m 2004 AMC 12B Problems (→Problem 7)
- 10:25, 6 January 2009 (diff | hist) . . (+62) . . m 2004 AMC 12B Problems/Problem 6
- 10:25, 6 January 2009 (diff | hist) . . (+745) . . N 2004 AMC 12B Problems/Problem 6 (New page: == Problem == Minneapolis-St. Paul International Airport is 8 miles southwest of downtown St. Paul and 10 miles southeast of downtown Minneapolis. Which of the following is closest to the ...)
- 10:21, 6 January 2009 (diff | hist) . . (-2) . . 2004 AMC 12B Problems (→Problem 6)
- 10:20, 6 January 2009 (diff | hist) . . (+1,149) . . N 2004 AMC 12B Problems/Problem 5 (New page: == Problem == On a trip from the United States to Canada, Isabella took <math>d</math> U.S. dollars. At the border she exchanged them all, receiving 10 Canadian dollars for every 7 U.S. do...)
- 10:08, 6 January 2009 (diff | hist) . . (+76) . . m 2004 AMC 12B Problems/Problem 4 (→Solution)
- 10:07, 6 January 2009 (diff | hist) . . (+878) . . N 2004 AMC 12B Problems/Problem 4 (New page: == Problem == An integer <math>x</math>, with <math>10\leq x\leq 99</math>, is to be chosen. If all choices are equally likely, what is the probability that at least one digit of <math>x<...)
- 07:26, 6 January 2009 (diff | hist) . . (+438) . . N 2004 AMC 12B Problems/Problem 3 (New page: == Problem == If <math>x</math> and <math>y</math> are positive integers for which <math>2^x3^y=1296</math>, what is the value of <math>x+y</math>? <math>(\mathrm {A}) 8\qquad (\mathrm {B...)
- 07:23, 6 January 2009 (diff | hist) . . (+976) . . N 2004 AMC 12B Problems/Problem 2 (New page: == Problem 2 == In the expression <math>c\cdot a^b-d</math>, the values of <math>a</math>, <math>b</math>, <math>c</math>, and <math>d</math> are 0, 1, 2, and 3, although not necessarily i...)
- 07:14, 6 January 2009 (diff | hist) . . (+1) . . m 2004 AMC 12B Problems (→Problem 4)
- 06:34, 6 January 2009 (diff | hist) . . (0) . . m 2004 AMC 12A Problems (typo)
- 06:30, 6 January 2009 (diff | hist) . . (+303) . . 2004 AMC 12A Problems/Problem 15 (beautified)
- 06:20, 6 January 2009 (diff | hist) . . (+390) . . 2004 AMC 12A Problems/Problem 11 (alternate solution)
- 06:11, 6 January 2009 (diff | hist) . . (+187) . . N Talk:2004 AMC 12A Problems/Problem 4 (New page: :Draw a tree diagram and see that the answer can be found in the sum of 6 + 6 granddaughters, 5 + 5 daughters, and 4 more daughters. Try as I might, I don't get this. Can it be deleted?) (current)
- 19:31, 5 January 2009 (diff | hist) . . (-22) . . m 2006 AMC 12B Problems/Problem 9 (→Solution 2)
- 19:30, 5 January 2009 (diff | hist) . . (+331) . . 2006 AMC 12B Problems/Problem 9 (alternate solution)
- 16:42, 5 January 2009 (diff | hist) . . (+432) . . 2008 AMC 12A Problems/Problem 6 (alternate solution)
- 15:13, 5 January 2009 (diff | hist) . . (-145) . . 2007 AMC 12B Problems/Problem 24 (rewrote to make it more clear and short)
- 14:51, 5 January 2009 (diff | hist) . . (+311) . . 2007 AMC 12B Problems/Problem 18 (filled in a part of a proof)
- 14:33, 5 January 2009 (diff | hist) . . (+490) . . 2007 AMC 12B Problems/Problem 15 (alternate solution)
- 09:54, 5 January 2009 (diff | hist) . . (+144) . . 2007 AMC 12A Problems/Problem 25 (corrected an argument)
- 09:47, 5 January 2009 (diff | hist) . . (+986) . . 2007 AMC 12A Problems/Problem 22 (new solution based on observing the problem modulo 9)
- 09:18, 5 January 2009 (diff | hist) . . (+2) . . 2007 AMC 12A Problems/Problem 16 (fix)
- 09:06, 5 January 2009 (diff | hist) . . (+10) . . m 2007 AMC 12A Problems (formatting)
- 09:06, 5 January 2009 (diff | hist) . . (-12) . . m 2007 AMC 12A Problems (formatting)
- 15:22, 27 December 2008 (diff | hist) . . (+2) . . m 1989 AIME Problems/Problem 1 (→Solution 2)
- 15:21, 27 December 2008 (diff | hist) . . (+313) . . 1989 AIME Problems/Problem 1 (alternate solution)