User contributions
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- 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
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