# User contributions

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- 19:17, 14 April 2018 (diff | hist) . . (+74) . . 2016 USAJMO Problems/Problem 1
- 22:15, 1 March 2018 (diff | hist) . . (+4) . . m 2018 AMC 10B Problems/Problem 25
- 22:14, 1 March 2018 (diff | hist) . . (+489) . . 2018 AMC 10B Problems/Problem 25
- 15:03, 16 February 2018 (diff | hist) . . (+495) . . 2018 AMC 10B Problems/Problem 17
- 15:02, 16 February 2018 (diff | hist) . . (+280) . . 2018 AMC 10B Problems/Problem 3
- 14:59, 16 February 2018 (diff | hist) . . (+146) . . 2018 AMC 10B Problems/Problem 1
- 14:58, 16 February 2018 (diff | hist) . . (+44) . . N 2018 AMC 12B Problems/Problem 2 (Redirected page to 2018 AMC 10B Problems/Problem 2) (current)
- 14:57, 16 February 2018
(diff | hist) . .
**(+551)** . . N 2018 AMC 12B Problems/Problem 7 (Created page with "== Problem == What is the value of <cmath> \log_37\cdot\log_59\cdot\log_711\cdot\log_913\cdots\log_{21}25\cdot\log_{23}27? </cmath> <math>\textbf{(A) } 3 \qquad \textbf{(B) }...") - 14:56, 16 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12B Problems/Problem 10 (Redirected page to 2018 AMC 10B Problems/Problem 14) (current)
- 14:55, 16 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12B Problems/Problem 14 (Redirected page to 2018 AMC 10B Problems/Problem 19) (current)
- 14:54, 16 February 2018
(diff | hist) . .
**(+728)** . . N 2018 AMC 12B Problems/Problem 15 (Created page with "== Problem == How many odd positive 3-digit integers are divisible by 3 but do not contain the digit 3? <math>\textbf{(A) } 96 \qquad \textbf{(B) } 97 \qquad \textbf{(C) } 98...") - 14:52, 16 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12B Problems/Problem 18 (Redirected page to 2018 AMC 10B Problems/Problem 20) (current)
- 14:52, 16 February 2018
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**(+805)** . . N 2018 AMC 12B Problems/Problem 22 (Created page with "== Problem == Consider polynomials <math>P(x)</math> of degree at most <math>3</math>, each of whose coefficients is an element of <math>\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\}</mat...") - 14:50, 16 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12B Problems/Problem 20 (Redirected page to 2018 AMC 10B Problems/Problem 24) (current)
- 14:49, 16 February 2018
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**(+1,166)** . . N 2018 AMC 12B Problems/Problem 12 (Created page with "== Problem == Side <math>\overline{AB}</math> of <math>\triangle ABC</math> has length <math>10</math>. The bisector of angle <math>A</math> meets <math>\overline{BC}</math>...") - 14:46, 16 February 2018
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**(+1,185)** . . N 2018 AMC 12B Problems/Problem 21 (Created page with "== Problem == In <math>\triangle{ABC}</math> with side lengths <math>AB = 13</math>, <math>AC = 12</math>, and <math>BC = 5</math>, let <math>O</math> and <math>I</math> deno...") - 14:45, 16 February 2018
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**(+955)** . . N 2018 AMC 12B Problems/Problem 17 (Created page with "== Problem == Let <math>p</math> and <math>q</math> be positive integers such that <cmath>\frac{5}{9} < \frac{p}{q} < \frac{4}{7}</cmath>and <math>q</math> isi as small as po...") - 14:44, 16 February 2018
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**(+1,044)** . . N 2018 AMC 12B Problems/Problem 23 (Created page with "== Problem == Ajay is stading at point <math>A</math> near Pontianak, Indonesia, <math>0^\circ</math> latitude and <math>110^\circ \text{ E}</math> longitude. Billy is standi...") - 14:43, 16 February 2018 (diff | hist) . . (+482) . . N 2018 AMC 12B Problems/Problem 9 (Created page with "== Problem == What is <cmath> \sum^{100}_{i=1} \sum^{100}_{j=1} (i+j) ? </cmath> <math> \textbf{(A) }100,100 \qquad \textbf{(B) }500,500\qquad \textbf{(C) }505,000 \qquad \t...")
- 14:41, 16 February 2018
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**(+1,825)** . . 2018 AMC 10B Problems/Problem 25 - 14:40, 16 February 2018 (diff | hist) . . (0) . . 2018 AMC 12B Problems/Problem 24 (Redirected page to 2018 AMC 10B Problems/Problem 25) (current)
- 14:40, 16 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12B Problems/Problem 24 (Redirected page to 2018 AMC 10B Problems/Problem 24)
- 14:38, 16 February 2018
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**(+2,428)** . . N 2018 AMC 12B Problems/Problem 25 (Created page with "== Problem == Circles <math>\omega_1</math>, <math>\omega_2</math>, and <math>\omega_3</math> each have radius <math>4</math> and are placed in the plane so that each circle...") - 14:35, 16 February 2018 (diff | hist) . . (+80) . . 2018 AMC 12B Problems/Problem 16
- 14:34, 16 February 2018
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**(+766)** . . N 2018 AMC 12B Problems/Problem 16 (Created page with "== Problem == The solutions to the equation <math>(z+6)^8=81</math> are connected in the complex plane to form a convex regular polygon, three of whose vertices are labeled <...") - 14:32, 16 February 2018 (diff | hist) . . (+44) . . N 2018 AMC 12B Problems/Problem 1 (Redirected page to 2018 AMC 10B Problems/Problem 1) (current)
- 14:31, 16 February 2018 (diff | hist) . . (+99) . . N 2018 AMC 12B Answer Key (Created page with "# A # D # B # B # D # B # C # C # E # D # A # C # C # E # A # B # A # B # C # C # E # D # C # C # D") (current)
- 18:38, 8 February 2018 (diff | hist) . . (+14) . . 2018 AMC 10A Problems/Problem 1
- 18:37, 8 February 2018 (diff | hist) . . (+33) . . 2018 AMC 10A Problems/Problem 1
- 18:35, 8 February 2018 (diff | hist) . . (+139) . . 2018 AMC 10A Problems/Problem 23
- 18:35, 8 February 2018 (diff | hist) . . (-14) . . 2018 AMC 10A Problems/Problem 21
- 18:34, 8 February 2018 (diff | hist) . . (+155) . . 2018 AMC 10A Problems/Problem 21
- 18:34, 8 February 2018 (diff | hist) . . (+47) . . 2018 AMC 10A Problems/Problem 20
- 18:33, 8 February 2018 (diff | hist) . . (+137) . . 2018 AMC 10A Problems/Problem 18
- 18:33, 8 February 2018 (diff | hist) . . (+124) . . 2018 AMC 10A Problems/Problem 17
- 18:31, 8 February 2018 (diff | hist) . . (+62) . . 2018 AMC 10A Problems/Problem 13
- 18:30, 8 February 2018 (diff | hist) . . (+495) . . 2018 AMC 10A Problems/Problem 12
- 18:26, 8 February 2018 (diff | hist) . . (+45) . . 2018 AMC 10A Problems/Problem 9
- 18:25, 8 February 2018 (diff | hist) . . (+45) . . 2018 AMC 10A Problems/Problem 7
- 18:25, 8 February 2018 (diff | hist) . . (-13) . . 2018 AMC 12A Problems/Problem 5 (current)
- 18:24, 8 February 2018 (diff | hist) . . (+45) . . 2018 AMC 10A Problems/Problem 5
- 18:23, 8 February 2018 (diff | hist) . . (+45) . . 2018 AMC 10A Problems/Problem 4
- 17:11, 8 February 2018 (diff | hist) . . (+99) . . N 2018 AMC 12A Answer Key (Created page with "# D # C # E # D # E # B # E # E # E # C # D # C # D # D # B # E # D # D # C # D # B # A # E # B # D") (current)
- 16:21, 8 February 2018 (diff | hist) . . (+90) . . 2018 AMC 12A Problems/Problem 1
- 16:20, 8 February 2018
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**(+795)** . . N 2018 AMC 12A Problems/Problem 2 (Created page with "== Problem == While exploring a cave, Carl comes across a collection of <math>5</math>-pound rocks worth <math>\$14</math> each, <math>4</math>-pound rocks worth <math>\$11</...") - 16:16, 8 February 2018 (diff | hist) . . (+44) . . N 2018 AMC 12A Problems/Problem 3 (Redirected page to 2018 AMC 10A Problems/Problem 4) (current)
- 16:16, 8 February 2018 (diff | hist) . . (+44) . . N 2018 AMC 12A Problems/Problem 4 (Redirected page to 2018 AMC 10A Problems/Problem 5) (current)
- 16:15, 8 February 2018
(diff | hist) . .
**(+688)** . . N 2018 AMC 12A Problems/Problem 6 (Created page with "== Problem == For positive integers <math>m</math> and <math>n</math> such that <math>m+10<n+1</math>, both the mean and the median of the set <math>\{m, m+4, m+10, n+1, n+2,...") - 16:13, 8 February 2018 (diff | hist) . . (+44) . . N 2018 AMC 12A Problems/Problem 7 (Redirected page to 2018 AMC 10A Problems/Problem 7) (current)
- 16:12, 8 February 2018 (diff | hist) . . (+44) . . N 2018 AMC 12A Problems/Problem 8 (Redirected page to 2018 AMC 10A Problems/Problem 9) (current)
- 16:12, 8 February 2018
(diff | hist) . .
**(+842)** . . N 2018 AMC 12A Problems/Problem 9 (Created page with "== Problem == Which of the following describes the largest subset of values of <math>y</math> within the closed interval <math>[0,\pi]</math> for which <cmath>\sin(x+y)\leq \...") - 16:10, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 10 (Redirected page to 2018 AMC 10A Problems/Problem 12) (current)
- 16:10, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 11 (Redirected page to 2018 AMC 10A Problems/Problem 13) (current)
- 16:09, 8 February 2018 (diff | hist) . . (+46) . . N 2018 AMC 12A Problems/Problem 12 (Redirected page to 2018 AMC 10A Problems/Problem 17) (current)
- 16:09, 8 February 2018 (diff | hist) . . (+46) . . N 2018 AMC 12A Problems/Problem 13 (Redirected page to 2018 AMC 10A Problems/Problem 18) (current)
- 16:08, 8 February 2018
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**(+961)** . . N 2018 AMC 12A Problems/Problem 14 (Created page with "== Problem == The solutions to the equation <math>\log_{3x} 4 = \log_{2x} 8</math>, where <math>x</math> is a positive real number other than <math>\tfrac{1}{3}</math> or <ma...") - 16:05, 8 February 2018 (diff | hist) . . (+46) . . N 2018 AMC 12A Problems/Problem 15 (Redirected page to 2018 AMC 10A Problems/Problem 20) (current)
- 16:02, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 16 (Redirected page to 2018 AMC 10A Problems/Problem 21) (current)
- 16:00, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 17 (Redirected page to 2018 AMC 10A Problems/Problem 23) (current)
- 15:58, 8 February 2018
(diff | hist) . .
**(+1,034)** . . N 2018 AMC 12A Problems/Problem 19 (Created page with "== Problem == Let <math>A</math> be the set of positive integers that have no prime factors other than <math>2</math>, <math>3</math>, or <math>5</math>. The infinite sum <cm...") - 15:56, 8 February 2018
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**(+1,414)** . . N 2018 AMC 12A Problems/Problem 20 (Created page with "== Problem == Triangle <math>ABC</math> is an isosceles right triangle with <math>AB=AC=3</math>. Let <math>M</math> be the midpoint of hypotenuse <math>\overline{BC}</math>....") - 15:50, 8 February 2018 (diff | hist) . . (+73) . . 2018 AMC 12A Problems/Problem 21
- 15:50, 8 February 2018
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**(+1,123)** . . N 2018 AMC 12A Problems/Problem 22 (Created page with "== Problem == The solutions to the equations <math>z^2=4+4\sqrt{15}i</math> and <math>z^2=2+2\sqrt 3i,</math> where <math>i=\sqrt{-1},</math> form the vertices of a parallelo...") - 15:47, 8 February 2018
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**(+1,434)** . . 2018 AMC 10A Problems/Problem 25 - 15:45, 8 February 2018
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**(+522)** . . 2018 AMC 10A Problems/Problem 24 - 15:41, 8 February 2018
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**(-708)** . . 2018 AMC 12A Problems/Problem 25 (Redirected page to 2018 AMC 10A Problems/Problem 25) (current) - 15:39, 8 February 2018 (diff | hist) . . (+73) . . 2018 AMC 12A Problems/Problem 24
- 15:39, 8 February 2018 (diff | hist) . . (-4) . . 2018 AMC 12A Problems/Problem 23
- 15:38, 8 February 2018
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**(+1,549)** . . N 2018 AMC 12A Problems/Problem 23 (Created page with "=== Problem === In <math>\triangle PAT,</math> <math>\angle P=36^{\circ},</math> <math>\angle A=56^{\circ},</math> and <math>PA=10.</math> Points <math>U</math> and <math>G<...") - 15:36, 8 February 2018
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**(+841)** . . N 2018 AMC 12A Problems/Problem 24 (Created page with "=== Problem === Alice, Bob, and Carol play a game in which each of them chooses a real number between 0 and 1. The winner of the game is the one whose number is between the n...") - 15:34, 8 February 2018
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**(+772)** . . N 2018 AMC 12A Problems/Problem 21 (Created page with "===Problem=== Which of the following polynomials has the greatest real root? <math>\textbf{(A) } x^{19}+2018x^{11}+1 \qquad \textbf{(B) } x^{17}+2018x^{11}+1 \q...") - 15:30, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 18 (Redirected page to 2018 AMC 10A Problems/Problem 24) (current)
- 22:33, 5 November 2017 (diff | hist) . . (+135) . . 1983 AIME Problems/Problem 14
- 11:04, 15 August 2017 (diff | hist) . . (-27) . . 2010 AMC 12B Problems/Problem 21
- 11:03, 15 August 2017 (diff | hist) . . (-320) . . 2010 AMC 12B Problems/Problem 21
- 19:38, 4 June 2017 (diff | hist) . . (-48) . . 2008 AIME I Problems/Problem 9
- 21:18, 14 March 2017 (diff | hist) . . (-16) . . 2016 USAJMO Problems/Problem 1
- 09:02, 30 November 2016
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**(+1,659)** . . Ball-and-urn (restored to January 27) - 17:07, 21 October 2016 (diff | hist) . . (+15) . . Joining an ARML team
- 20:16, 10 September 2016 (diff | hist) . . (+80) . . How should I prepare?
- 11:33, 17 August 2016 (diff | hist) . . (+12) . . Mock MathCounts
- 19:37, 10 July 2016
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**(+1,364)** . . 2014 AMC 8 Problems (restored missing problems) - 19:31, 10 July 2016
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**(+1,466)** . . 2015 AMC 8 Problems (restored missing problems) - 23:22, 7 July 2016 (diff | hist) . . (+5) . . 2013 AMC 12B Problems/Problem 25
- 23:21, 7 July 2016
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**(+537)** . . 2013 AMC 12B Problems/Problem 25 - 14:32, 1 July 2016
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**(+732)** . . Mock MathCounts - 17:49, 28 June 2016 (diff | hist) . . (+6) . . How should I prepare?
- 20:11, 25 June 2016 (diff | hist) . . (+10) . . 2004 AIME II Problems/Problem 10
- 18:28, 25 June 2016 (diff | hist) . . (+3) . . 2011 AMC 12B Problems/Problem 20
- 18:17, 25 June 2016
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**(+836)** . . 2011 AMC 12B Problems/Problem 20 - 18:05, 25 June 2016
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**(+1,873)** . . 2011 AMC 12B Problems/Problem 25 - 17:10, 20 June 2016 (diff | hist) . . (-75) . . 2001 AMC 10 Problems/Problem 23 (Redirected page to 2001 AMC 12 Problems/Problem 11) (current)
- 17:41, 15 June 2016 (diff | hist) . . (+157) . . How should I prepare?
- 20:15, 9 June 2016 (diff | hist) . . (+111) . . Resources for mathematics competitions
- 20:14, 9 June 2016 (diff | hist) . . (+169) . . Resources for mathematics competitions
- 20:12, 9 June 2016 (diff | hist) . . (0) . . Resources for mathematics competitions
- 20:11, 9 June 2016 (diff | hist) . . (+365) . . Resources for mathematics competitions
- 19:51, 9 June 2016 (diff | hist) . . (+72) . . How should I prepare?
- 19:49, 9 June 2016 (diff | hist) . . (+101) . . Resources for mathematics competitions
- 19:48, 9 June 2016 (diff | hist) . . (+141) . . How should I prepare?

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