# User contributions

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- 15:12, 8 February 2018
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**(+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 \...") - 15:10, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 10 (Redirected page to 2018 AMC 10A Problems/Problem 12) (current)
- 15:10, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 11 (Redirected page to 2018 AMC 10A Problems/Problem 13) (current)
- 15:09, 8 February 2018 (diff | hist) . . (+46) . . N 2018 AMC 12A Problems/Problem 12 (Redirected page to 2018 AMC 10A Problems/Problem 17) (current)
- 15:09, 8 February 2018 (diff | hist) . . (+46) . . N 2018 AMC 12A Problems/Problem 13 (Redirected page to 2018 AMC 10A Problems/Problem 18) (current)
- 15:08, 8 February 2018
(diff | hist) . .
**(+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...") - 15:05, 8 February 2018 (diff | hist) . . (+46) . . N 2018 AMC 12A Problems/Problem 15 (Redirected page to 2018 AMC 10A Problems/Problem 20) (current)
- 15:02, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 16 (Redirected page to 2018 AMC 10A Problems/Problem 21) (current)
- 15:00, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 17 (Redirected page to 2018 AMC 10A Problems/Problem 23) (current)
- 14:58, 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...") - 14:56, 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>....") - 14:50, 8 February 2018 (diff | hist) . . (+73) . . 2018 AMC 12A Problems/Problem 21
- 14:50, 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...") - 14:47, 8 February 2018
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**(+1,434)** . . 2018 AMC 10A Problems/Problem 25 - 14:45, 8 February 2018
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**(+522)** . . 2018 AMC 10A Problems/Problem 24 - 14:41, 8 February 2018
(diff | hist) . .
**(-708)** . . 2018 AMC 12A Problems/Problem 25 (Redirected page to 2018 AMC 10A Problems/Problem 25) (current) - 14:39, 8 February 2018 (diff | hist) . . (+73) . . 2018 AMC 12A Problems/Problem 24
- 14:39, 8 February 2018 (diff | hist) . . (-4) . . 2018 AMC 12A Problems/Problem 23
- 14:38, 8 February 2018
(diff | hist) . .
**(+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<...") - 14:36, 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...") - 14:34, 8 February 2018
(diff | hist) . .
**(+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...") - 14:30, 8 February 2018 (diff | hist) . . (+45) . . N 2018 AMC 12A Problems/Problem 18 (Redirected page to 2018 AMC 10A Problems/Problem 24) (current)
- 21:33, 5 November 2017 (diff | hist) . . (+135) . . 1983 AIME Problems/Problem 14
- 10:04, 15 August 2017 (diff | hist) . . (-27) . . 2010 AMC 12B Problems/Problem 21
- 10:03, 15 August 2017 (diff | hist) . . (-320) . . 2010 AMC 12B Problems/Problem 21
- 18:38, 4 June 2017 (diff | hist) . . (-48) . . 2008 AIME I Problems/Problem 9
- 20:18, 14 March 2017 (diff | hist) . . (-16) . . 2016 USAJMO Problems/Problem 1
- 08:02, 30 November 2016
(diff | hist) . .
**(+1,659)** . . Ball-and-urn (restored to January 27) - 16:07, 21 October 2016 (diff | hist) . . (+15) . . Joining an ARML team
- 19:16, 10 September 2016 (diff | hist) . . (+80) . . How should I prepare?
- 10:33, 17 August 2016 (diff | hist) . . (+12) . . Mock MathCounts
- 18:37, 10 July 2016
(diff | hist) . .
**(+1,364)** . . 2014 AMC 8 Problems (restored missing problems) - 18:31, 10 July 2016
(diff | hist) . .
**(+1,466)** . . 2015 AMC 8 Problems (restored missing problems) - 22:22, 7 July 2016 (diff | hist) . . (+5) . . 2013 AMC 12B Problems/Problem 25
- 22:21, 7 July 2016
(diff | hist) . .
**(+537)** . . 2013 AMC 12B Problems/Problem 25 - 13:32, 1 July 2016
(diff | hist) . .
**(+732)** . . Mock MathCounts - 16:49, 28 June 2016 (diff | hist) . . (+6) . . How should I prepare?
- 19:11, 25 June 2016 (diff | hist) . . (+10) . . 2004 AIME II Problems/Problem 10
- 17:28, 25 June 2016 (diff | hist) . . (+3) . . 2011 AMC 12B Problems/Problem 20
- 17:17, 25 June 2016
(diff | hist) . .
**(+836)** . . 2011 AMC 12B Problems/Problem 20 - 17:05, 25 June 2016
(diff | hist) . .
**(+1,873)** . . 2011 AMC 12B Problems/Problem 25 - 16:10, 20 June 2016 (diff | hist) . . (-75) . . 2001 AMC 10 Problems/Problem 23 (Redirected page to 2001 AMC 12 Problems/Problem 11) (current)
- 16:41, 15 June 2016 (diff | hist) . . (+157) . . How should I prepare?
- 19:15, 9 June 2016 (diff | hist) . . (+111) . . Resources for mathematics competitions
- 19:14, 9 June 2016 (diff | hist) . . (+169) . . Resources for mathematics competitions
- 19:12, 9 June 2016 (diff | hist) . . (0) . . Resources for mathematics competitions
- 19:11, 9 June 2016 (diff | hist) . . (+365) . . Resources for mathematics competitions
- 18:51, 9 June 2016 (diff | hist) . . (+72) . . How should I prepare?
- 18:49, 9 June 2016 (diff | hist) . . (+101) . . Resources for mathematics competitions
- 18:48, 9 June 2016 (diff | hist) . . (+141) . . How should I prepare?
- 18:46, 9 June 2016 (diff | hist) . . (+413) . . How should I prepare?
- 07:49, 29 May 2016 (diff | hist) . . (+57) . . 2005 USAMO Problems/Problem 3 (current)
- 07:47, 29 May 2016
(diff | hist) . .
**(+1,752)** . . 2005 USAMO Problems/Problem 3 - 20:28, 28 May 2016 (diff | hist) . . (-23) . . 2013 APMO Problems/Problem 5 (current)
- 20:25, 28 May 2016
(diff | hist) . .
**(+4,841)** . . N 2013 APMO Problems/Problem 5 (Created page with "== Problem == Let <math>ABCD</math> be a quadrilateral inscribed in a circle <math>\omega</math>, and let <math>P</math> be a point on the extension of <math>AC</math> such t...") - 19:29, 28 May 2016
(diff | hist) . .
**(+1,051)** . . APMO Problems and Solutions - 19:17, 28 May 2016
(diff | hist) . .
**(+775)** . . 2014 IMO Problems/Problem 4 - 19:07, 28 May 2016
(diff | hist) . .
**(+752)** . . 2014 IMO Problems/Problem 4 - 21:21, 27 May 2016 (diff | hist) . . (-65) . . 2001 AIME I Problems/Problem 12
- 21:14, 27 May 2016
(diff | hist) . .
**(+725)** . . 2001 AIME I Problems/Problem 13 - 21:05, 27 May 2016 (diff | hist) . . (+36) . . 2001 AIME I Problems/Problem 9
- 18:25, 27 May 2016 (diff | hist) . . (+373) . . 2001 AIME I Problems/Problem 9
- 18:17, 27 May 2016 (diff | hist) . . (-2) . . 2000 AIME I Answer Key (current)
- 18:12, 27 May 2016
(diff | hist) . .
**(+1,195)** . . 2001 AIME I Problems/Problem 15 - 16:08, 24 May 2016 (diff | hist) . . (+113) . . Mock MathCounts
- 20:35, 10 May 2016 (diff | hist) . . (-78) . . 2001 USAMO Problems/Problem 2
- 20:33, 10 May 2016
(diff | hist) . .
**(+3,245)** . . 2001 USAMO Problems/Problem 2 - 20:42, 29 April 2016 (diff | hist) . . (-63) . . 1986 IMO Problems/Problem 1
- 15:06, 29 April 2016
(diff | hist) . .
**(+2,461)** . . N 1986 IMO Problems (Created page with "== Day 1 == === Problem 1 === Let <math>d</math> be any positive integer not equal to <math>2, 5</math> or <math>13</math>. Show that one can find distinct <math>a,b</math> ...") (current) - 15:04, 29 April 2016
(diff | hist) . .
**(+807)** . . N 1986 IMO Problems/Problem 1 (Created page with "== Problem == Let <math>d</math> be any positive integer not equal to <math>2, 5</math> or <math>13</math>. Show that one can find distinct <math>a,b</math> in the set <math>...") - 16:10, 21 April 2016 (diff | hist) . . (+58) . . 2016 USAMO Problems/Problem 4
- 16:05, 21 April 2016
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**(+4,264)** . . N 2016 USAMO Problems/Problem 4 (Created page with "== Problem == Find all functions <math>f:\mathbb{R}\rightarrow \mathbb{R}</math> such that for all real numbers <math>x</math> and <math>y</math>, <cmath>(f(x)+xy)\cdot f(x-3y...") - 15:57, 21 April 2016
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**(+2,388)** . . N 2016 USAMO Problems/Problem 1 (Created page with "== Problem == Let <math>X_1, X_2, \ldots, X_{100}</math> be a sequence of mutually distinct nonempty subsets of a set <math>S</math>. Any two sets <math>X_i</math> and <math>...") - 15:42, 21 April 2016 (diff | hist) . . (+76) . . 2016 USAJMO Problems
- 15:41, 21 April 2016 (diff | hist) . . (+43) . . N 2016 USAJMO Problems/Problem 6 (Redirected page to 2016 USAMO Problems/Problem 4) (current)
- 15:40, 21 April 2016 (diff | hist) . . (+43) . . N 2016 USAJMO Problems/Problem 3 (Redirected page to 2016 USAMO Problems/Problem 1) (current)
- 15:39, 21 April 2016
(diff | hist) . .
**(+543)** . . N 2016 USAMO (Created page with "The first link contains the full set of test problems. The rest contain each individual problem and its solution. 2016 USAMO Problems * 2016 USAMO Problems/Problem 1 ...") (current) - 15:36, 21 April 2016 (diff | hist) . . (+483) . . N 2016 USAJMO (Created page with "'''2016 USAJMO''' problems and solutions. The first link contains the full set of test problems. The rest contain each individual problem and its solution. 2016 U...") (current)
- 15:33, 21 April 2016 (diff | hist) . . (+99) . . 2016 USAJMO Problems/Problem 1
- 15:32, 21 April 2016 (diff | hist) . . (+74) . . 2016 USAJMO Problems/Problem 5
- 15:31, 21 April 2016 (diff | hist) . . (+95) . . 2015 USAJMO Problems/Problem 1
- 15:29, 21 April 2016 (diff | hist) . . (+32) . . 2015 USAJMO Problems/Problem 5
- 15:27, 21 April 2016 (diff | hist) . . (+45) . . 2015 USAJMO Problems/Problem 5
- 15:25, 21 April 2016
(diff | hist) . .
**(+1,072)** . . N 2015 USAJMO Problems/Problem 5 (Created page with "== Problem == Let <math>ABCD</math> be a cyclic quadrilateral. Prove that there exists a point <math>X</math> on segment <math>\overline{BD}</math> such that <math>\angle BAC...") - 15:09, 21 April 2016
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**(+848)** . . 2016 USAJMO Problems/Problem 5 - 14:21, 21 April 2016
(diff | hist) . .
**(+1,210)** . . N 2016 USAJMO Problems/Problem 5 (Created page with "== Problem == Let <math>\triangle ABC</math> be an acute triangle, with <math>O</math> as its circumcenter. Point <math>H</math> is the foot of the perpendicular from <math>A...") - 14:09, 21 April 2016
(diff | hist) . .
**(+1,300)** . . N 2016 USAJMO Problems/Problem 1 (Created page with "== Problem == The isosceles triangle <math>\triangle ABC</math>, with <math>AB=AC</math>, is inscribed in the circle <math>\omega</math>. Let <math>P</math> be a variable poi...") - 13:56, 21 April 2016
(diff | hist) . .
**(+2,521)** . . N 2016 USAJMO Problems (Created page with "==Day 1== ===Problem 1=== The isosceles triangle <math>\triangle ABC</math>, with <math>AB=AC</math>, is inscribed in the circle <math>\omega</math>. Let <math>P</math> be a v...") - 19:18, 18 April 2016
(diff | hist) . .
**(+3,252)** . . 2014 USAJMO Problems/Problem 5 (current) - 19:04, 18 April 2016
(diff | hist) . .
**(+1,548)** . . 2014 USAJMO Problems/Problem 3 - 18:33, 9 April 2016
(diff | hist) . .
**(-733)** . . Mock MathCounts - 15:47, 9 April 2016
(diff | hist) . .
**(-1,810)** . . Mock AMC - 15:36, 9 April 2016
(diff | hist) . .
**(-626)** . . Mock AMC - 15:25, 9 April 2016 (diff | hist) . . (+25) . . Mock AMC
- 15:24, 9 April 2016
(diff | hist) . .
**(+811)** . . Mock AMC - 17:01, 7 April 2016 (diff | hist) . . (+2) . . Joining an ARML team
- 21:07, 2 April 2016 (diff | hist) . . (+30) . . 2011 USAJMO Problems/Problem 3
- 21:05, 2 April 2016 (diff | hist) . . (+128) . . 2011 USAJMO Problems/Problem 3
- 21:02, 2 April 2016
(diff | hist) . .
**(+1,880)** . . 2011 USAJMO Problems/Problem 3 - 18:36, 2 April 2016 (diff | hist) . . (-14) . . AMC historical results (correction ;))

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