User contributions
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- 17:15, 4 June 2011 (diff | hist) . . (+59) . . m 2011 AMC 10B Problems/Problem 16
- 17:14, 4 June 2011 (diff | hist) . . (+59) . . m 2011 AMC 10B Problems/Problem 15
- 17:14, 4 June 2011 (diff | hist) . . (+59) . . m 2011 AMC 10B Problems/Problem 14
- 17:14, 4 June 2011 (diff | hist) . . (+59) . . m 2011 AMC 10B Problems/Problem 13
- 17:13, 4 June 2011 (diff | hist) . . (+59) . . m 2011 AMC 10B Problems/Problem 12
- 17:13, 4 June 2011 (diff | hist) . . (+59) . . m 2011 AMC 10B Problems/Problem 11
- 17:12, 4 June 2011 (diff | hist) . . (-4) . . m 2011 AMC 10B Problems/Problem 10
- 17:12, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 9 (→Problem 9)
- 17:12, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 8
- 17:12, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 7
- 17:11, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 6
- 17:11, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 5
- 17:11, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 2
- 17:11, 4 June 2011 (diff | hist) . . (-3) . . m 2011 AMC 10B Problems/Problem 1
- 17:10, 4 June 2011 (diff | hist) . . (+61) . . 2007 AMC 10B Problems/Problem 19
- 17:08, 4 June 2011 (diff | hist) . . (+61) . . m 2007 AMC 10B Problems/Problem 9 (see also)
- 17:08, 4 June 2011 (diff | hist) . . (+62) . . m 2007 AMC 10B Problems/Problem 8 (see also)
- 17:07, 4 June 2011 (diff | hist) . . (+60) . . m 2007 AMC 10B Problems/Problem 7 (see also)
- 17:07, 4 June 2011 (diff | hist) . . (+67) . . m 2007 AMC 10B Problems/Problem 6 (see also)
- 17:06, 4 June 2011 (diff | hist) . . (+61) . . m 2007 AMC 10B Problems/Problem 4 (see also)
- 17:05, 4 June 2011 (diff | hist) . . (+46) . . m 2007 AMC 12B Problems/Problem 2 (see also)
- 17:03, 4 June 2011 (diff | hist) . . (+770) . . N 2011 AMC 10B Problems/Problem 10 (Created page with "== Problem 10 == Consider the set of numbers <math>\{1, 10, 10^2, 10^3, \ldots, 10^{10}\}</math>. The ratio of the largest element of the set to the sum of the other ten element...")
- 16:45, 4 June 2011 (diff | hist) . . (+62) . . m 2011 AMC 10B Problems/Problem 9 (see also)
- 16:44, 4 June 2011 (diff | hist) . . (+61) . . m 2011 AMC 10B Problems/Problem 8 (see also)
- 16:44, 4 June 2011 (diff | hist) . . (+64) . . m 2011 AMC 10B Problems/Problem 7 (see also)
- 16:43, 4 June 2011 (diff | hist) . . (+61) . . 2011 AMC 10B Problems/Problem 6
- 16:43, 4 June 2011 (diff | hist) . . (+73) . . m 2011 AMC 10B Problems/Problem 5 (see also)
- 16:42, 4 June 2011 (diff | hist) . . (+61) . . 2011 AMC 10B Problems/Problem 4 (see also)
- 16:42, 4 June 2011 (diff | hist) . . (+73) . . m 2011 AMC 10B Problems/Problem 3 (see also)
- 16:41, 4 June 2011 (diff | hist) . . (+62) . . 2011 AMC 10B Problems/Problem 2
- 16:41, 4 June 2011 (diff | hist) . . (0) . . m 2011 AMC 10B Problems/Problem 1
- 16:40, 4 June 2011 (diff | hist) . . (+75) . . m 2011 AMC 10B Problems/Problem 1 (see also)
- 16:38, 4 June 2011 (diff | hist) . . (0) . . m 2007 AMC 10B Problems/Problem 2 (→See Also)
- 16:38, 4 June 2011 (diff | hist) . . (+58) . . m 2007 AMC 10B Problems/Problem 2 (see also)
- 16:25, 4 June 2011 (diff | hist) . . (+203) . . 2004 AMC 10B Problems (LaTeXed numbers)
- 16:16, 4 June 2011 (diff | hist) . . (+1,235) . . N 2002 AMC 10B Problems/Problem 23 (Created page with "== Problem 23 == Let <math>\{a_k\}</math> be a sequence of integers such that <math>a_1=1</math> and <math>a_{m+n}=a_m+a_n+mn,</math> for all positive integers <math>m</math> an...")
- 16:01, 4 June 2011 (diff | hist) . . (+1,523) . . N 2002 AMC 10B Problems/Problem 24 (Created page with "== Problem 24 == Riders on a Ferris wheel travel in a circle in a vertical plane. A particular wheel has radius <math>20</math> feet and revolves at the constant rate of one rev...")
- 15:48, 4 June 2011 (diff | hist) . . (+52) . . m 2002 AMC 10B Problems/Problem 25 (→Problem)
- 15:46, 4 June 2011 (diff | hist) . . (+232) . . 2002 AMC 10B Problems/Problem 22
- 15:40, 4 June 2011 (diff | hist) . . (-49) . . 2002 AMC 10B Problems/Problem 21
- 15:26, 4 June 2011 (diff | hist) . . (+1,436) . . N 2002 AMC 10B Problems/Problem 5 (Created page with "== Problem 5 == Circles of radius <math>2</math> and <math>3</math> are externally tangent and are circumscribed by a third circle, as shown in the figure. Find the area of the ...")
- 15:18, 4 June 2011 (diff | hist) . . (-136) . . 2011 AMC 10B Problems/Problem 23
- 14:35, 4 June 2011 (diff | hist) . . (-16) . . m 2011 AMC 10B Problems/Problem 22
- 14:35, 4 June 2011 (diff | hist) . . (+2,883) . . 2011 AMC 10B Problems/Problem 22
- 14:03, 4 June 2011 (diff | hist) . . (+22) . . N File:2011AMC10B22.png (2011 AMC10B Problem 22) (current)
- 13:52, 4 June 2011 (diff | hist) . . (+2,219) . . N 2011 AMC 10B Problems/Problem 21 (Created page with "== Problem 21 == Brian writes down four integers <math>w > x > y > z</math> whose sum is <math>44</math>. The pairwise positive differences of these numbers are <math>1, 3, 4, 5...")
- 15:40, 30 May 2011 (diff | hist) . . (+1,791) . . 1951 AHSME Problems
- 02:21, 29 May 2011 (diff | hist) . . (+1,888) . . N 2011 AMC 10B Problems/Problem 12 (Created page with '== Problem 12 == Keiko walks once around a track at exactly the same constant speed every day. The sides of the track are straight, and the ends are semicircles. The track has a…')
- 01:54, 29 May 2011 (diff | hist) . . (+1,267) . . N 2011 AMC 10B Problems/Problem 8 (Created page with '== Problem 8 == At a certain beach if it is at least <math>80^{\circ} F</math> and sunny, then the beach will be crowded. On June 10 the beach was not crowded. What can be concl…')
- 19:36, 27 May 2011 (diff | hist) . . (+1,544) . . N 2007 AMC 10B Problems/Problem 9 (Created page with '==Problem 9== A cryptographic code is designed as follows. The first time a letter appears in a given message it is replaced by the letter that is <math>1</math> place to its ri…')
- 19:29, 27 May 2011 (diff | hist) . . (0) . . 2007 AMC 10B Problems/Problem 4 (→Solution)
- 19:28, 27 May 2011 (diff | hist) . . (+2,711) . . N 2007 AMC 10B Problems/Problem 19 (Created page with '==Problem 19== The wheel shown is spun twice, and the randomly determined numbers opposite the pointer are recorded. The first number is divided by <math>4,</math> and the secon…')
- 18:29, 27 May 2011 (diff | hist) . . (+944) . . N 2007 AMC 10B Problems/Problem 8 (Created page with '==Problem 8== On the trip home from the meeting where this AMC10 was constructed, the Contest Chair noted that his airport parking receipt had digits of the form <math>bbcac,</m…')
- 18:07, 27 May 2011 (diff | hist) . . (+1,102) . . N 2007 AMC 10B Problems/Problem 7 (Created page with '==Problem 7== All sides of the convex pentagon <math>ABCDE</math> are of equal length, and <math>\angle A= \angle B = 90^\circ.</math> What is the degree measure of <math>\angle…')
- 17:31, 27 May 2011 (diff | hist) . . (+1,145) . . N 2007 AMC 10B Problems/Problem 6 (Created page with '==Problem 6== The <math>2007 AMC10</math> will be scored by awarding <math>6</math> points for each correct response, <math>0</math> points for each incorrect response, and <mat…')
- 17:25, 27 May 2011 (diff | hist) . . (+852) . . N 2007 AMC 10B Problems/Problem 4 (Created page with '==Problem 4== The point <math>O</math> is the center of the circle circumscribed about <math>\triangle ABC,</math> with <math>\angle BOC=120^\circ</math> and <math>\angle AOB=14…')
- 17:14, 27 May 2011 (diff | hist) . . (+373) . . N 2007 AMC 10B Problems/Problem 2 (Created page with '==Problem 2== Define the operation <math>\star</math> by <math>a \star b = (a+b)b.</math> What is <math>(3 \star 5) - (5 \star 3)?</math> <math>\textbf{(A) } -16 \qquad\textbf{…')
- 17:06, 27 May 2011 (diff | hist) . . (+202) . . m 2007 AMC 10B Problems (→Problem 19)
- 16:58, 27 May 2011 (diff | hist) . . (+1,081) . . 2007 AMC 10B Problems (added picture to 19)
- 16:29, 27 May 2011 (diff | hist) . . (+789) . . 2007 AMC 10B Problems (added picture to 18)
- 16:13, 27 May 2011 (diff | hist) . . (+12,700) . . N 2007 AMC 10B Problems (no pictures yet)
- 15:10, 27 May 2011 (diff | hist) . . (+451) . . 2002 AMC 10B Problems (→Problem 24)
- 15:08, 27 May 2011 (diff | hist) . . (+342) . . 2002 AMC 10B Problems (→Problem 23)
- 15:06, 27 May 2011 (diff | hist) . . (+480) . . 2002 AMC 10B Problems (→Problem 21)
- 15:04, 27 May 2011 (diff | hist) . . (+283) . . 2002 AMC 10B Problems (→Problem 20)
- 15:03, 27 May 2011 (diff | hist) . . (+348) . . 2002 AMC 10B Problems (→Problem 19)
- 14:59, 27 May 2011 (diff | hist) . . (+65) . . m 2002 AMC 10B Problems
- 14:57, 27 May 2011 (diff | hist) . . (+818) . . 2002 AMC 10B Problems (→Problem 5)
- 14:43, 27 May 2011 (diff | hist) . . (+2) . . m 2002 AMC 10B Problems (→Problem 4)
- 14:42, 27 May 2011 (diff | hist) . . (+13) . . m 2002 AMC 10B Problems (→Problem 3)
- 14:42, 27 May 2011 (diff | hist) . . (+26) . . 2002 AMC 10B Problems (→Problem 2)
- 14:41, 27 May 2011 (diff | hist) . . (+40) . . m 2002 AMC 10B Problems (→Problem 1)
- 00:55, 27 May 2011 (diff | hist) . . (+4) . . 2003 AMC 10B Problems (→Problem 22)
- 00:55, 27 May 2011 (diff | hist) . . (+12,168) . . N 2003 AMC 10B Problems (no pictures yet)
- 19:55, 26 May 2011 (diff | hist) . . (+1,398) . . N 2011 AMC 10B Problems/Problem 19 (Created page with '== Problem 19 == What is the product of all the roots of the equation <cmath>\sqrt{5 | x | + 8} = \sqrt{x^2 - 16}.</cmath> <math> \textbf{(A)}\ -64 \qquad\textbf{(B)}\ -24 \qqu…')
- 19:35, 26 May 2011 (diff | hist) . . (+483) . . 2011 AMC 10B Problems (→Problem 17)
- 19:35, 26 May 2011 (diff | hist) . . (+202) . . 2011 AMC 10B Problems/Problem 17
- 19:02, 26 May 2011 (diff | hist) . . (+76) . . 2011 AMC 10B Problems (→Problem 8)
- 00:53, 26 May 2011 (diff | hist) . . (+1,546) . . N 2011 AMC 10B Problems/Problem 17 (Created page with '== Problem 17 == In the given circle, the diameter <math>\overline{EB}</math> is parallel to <math>\overline{DC}</math>, and <math>\overline{AB}</math> is parallel to <math>\ove…')
- 00:15, 26 May 2011 (diff | hist) . . (+1,130) . . 2011 AMC 10B Problems/Problem 18
- 23:30, 25 May 2011 (diff | hist) . . (+2,225) . . N 2011 AMC 10B Problems/Problem 16 (Created page with '== Problem 16 == A dart board is a regular octagon divided into regions as shown. Suppose that a dart thrown at the board is equally likely to land anywhere on the board. What i…')
- 21:03, 25 May 2011 (diff | hist) . . (+1,266) . . N 2011 AMC 10B Problems/Problem 15 (Created page with '== Problem 15 == Let <math>@</math> denote the "averaged with" operation: <math>a @ b = \frac{a+b}{2}</math>. Which of the following distributive laws hold for all numbers <math…')
- 20:50, 25 May 2011 (diff | hist) . . (+718) . . N 2011 AMC 10B Problems/Problem 14 (Created page with '== Problem 14 == A rectangular parking lot has a diagonal of <math>25</math> meters and an area of <math>168</math> square meters. In meters, what is the perimeter of the parkin…')
- 20:44, 25 May 2011 (diff | hist) . . (+852) . . N 2011 AMC 10B Problems/Problem 13 (Created page with '== Problem 13 == Two real numbers are selected independently at random from the interval <math>[-20, 10]</math>. What is the probability that the product of those numbers is gre…')
- 20:38, 25 May 2011 (diff | hist) . . (+326) . . 2011 AMC 10B Problems/Problem 11
- 20:29, 25 May 2011 (diff | hist) . . (+1,470) . . N 2011 AMC 10B Problems/Problem 9 (Created page with '== Problem 9 == The area of <math>\triangle</math><math>EBD</math> is one third of the area of <math>3-4-5</math> <math>\triangle</math><math>ABC</math>. Segment <math>DE</math>…')
- 20:09, 25 May 2011 (diff | hist) . . (+49) . . 2011 AMC 10B Problems (→Problem 9)
- 19:48, 25 May 2011 (diff | hist) . . (+1,036) . . N 2011 AMC 10B Problems/Problem 7 (Created page with '== Problem 7 == The sum of two angles of a triangle is <math>\frac{6}{5}</math> of a right angle, and one of these two angles is <math>30^{\circ}</math> larger than the other. W…')
- 19:37, 25 May 2011 (diff | hist) . . (+763) . . N 2011 AMC 10B Problems/Problem 6 (Created page with '== Problem 6 == On Halloween Casper ate <math>\frac{1}{3}</math> of his candies and then gave <math>2</math> candies to his brother. The next day he ate <math>\frac{1}{3}</math>…')
- 19:16, 25 May 2011 (diff | hist) . . (+782) . . N 2011 AMC 10B Problems/Problem 5 (Created page with '== Problem 5 == In multiplying two positive integers <math>a</math> and <math>b</math>, Ron reversed the digits of the two-digit number <math>a</math>. His erroneous product was…')
- 19:09, 25 May 2011 (diff | hist) . . (+34) . . 2011 AMC 10B Problems/Problem 4
- 19:00, 25 May 2011 (diff | hist) . . (+146) . . 2011 AMC 10B Problems/Problem 3
- 18:57, 25 May 2011 (diff | hist) . . (+226) . . 2011 AMC 10B Problems/Problem 2
- 18:53, 25 May 2011 (diff | hist) . . (+255) . . 2011 AMC 10B Problems/Problem 1
- 01:55, 25 May 2011 (diff | hist) . . (+334) . . 2011 AMC 10B Problems (→Problem 16)
- 01:48, 25 May 2011 (diff | hist) . . (+428) . . 2011 AMC 10B Problems (→Problem 9)
- 01:28, 25 May 2011 (diff | hist) . . (+1) . . m 2011 AMC 10B Problems (→Problem 25)
- 01:25, 25 May 2011 (diff | hist) . . (+2) . . 2011 AMC 10B Problems (→Problem 25)
- 01:22, 25 May 2011 (diff | hist) . . (+13) . . 2011 AMC 10B Problems (→Problem 23)
- 01:21, 25 May 2011 (diff | hist) . . (+12,185) . . N 2011 AMC 10B Problems (Created page with '== Problem 1 == What is <cmath>\dfrac{2+4+6}{1+3+5} - \dfrac{1+3+5}{2+4+6}</cmath>? <math> \textbf{(A)}\ -1\qquad\textbf{(B)}\ \frac{5}{36}\qquad\textbf{(C)}\ \frac{7}{12}\qqua…')
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