User contributions
- 14:16, 2 March 2024 (diff | hist) . . (+2) . . 2023 USAMO Problems (→Problem 3)
- 08:45, 24 February 2023 (diff | hist) . . (-73) . . 2013 TSTST Problems (current)
- 08:45, 24 February 2023 (diff | hist) . . (+74) . . 2013 TSTST Problems
- 08:44, 24 February 2023 (diff | hist) . . (+15) . . 2013 TSTST Problems
- 08:44, 24 February 2023 (diff | hist) . . (+6) . . 2013 TSTST Problems
- 08:43, 24 February 2023 (diff | hist) . . (+5,093) . . N 2013 TSTST Problems (Created page with "==Day 1== ===Problem 1=== Let <math>ABC</math> be a triangle and <math>D</math>, <math>E</math>, <math>F</math> be the midpoints of arcs <math>BC</math>, <math>CA</math>, <mat...")
- 08:50, 23 February 2023 (diff | hist) . . (+33) . . 2019 ELMO Problems (current)
- 08:49, 23 February 2023 (diff | hist) . . (-44) . . 2019 ELMO Problems (→Problem 3)
- 08:49, 23 February 2023 (diff | hist) . . (+4,656) . . N 2019 ELMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>P(x)</math> be a polynomial with integer coefficients such that <math>P(0)=1</math>, and let <math>c > 1</math> be an integer. Define <math...")
- 08:38, 22 February 2023 (diff | hist) . . (0) . . 2018 TSTST Problems (→Problem 7) (current)
- 08:38, 22 February 2023 (diff | hist) . . (-24) . . 2018 TSTST Problems (→Problem 4)
- 08:37, 22 February 2023 (diff | hist) . . (-1) . . 2018 TSTST Problems (→Problem 7)
- 08:36, 22 February 2023 (diff | hist) . . (+1) . . 2018 TSTST Problems (→Problem 7)
- 08:36, 22 February 2023 (diff | hist) . . (-17) . . 2018 TSTST Problems (→Problem 7)
- 08:35, 22 February 2023 (diff | hist) . . (+5,658) . . N 2018 TSTST Problems (Created page with "==Day 1== ===Problem 1=== As usual, let <math>{\mathbb Z}[x]</math> denote the set of single-variable polynomials in <math>x</math> with integer coefficients. Find all functio...")
- 14:13, 24 December 2022 (diff | hist) . . (+1) . . 2022 EGMO Problems (→Problem 6) (current)
- 14:12, 24 December 2022 (diff | hist) . . (-50) . . 2014 EGMO Problems (→Problem 5) (current)
- 14:08, 24 December 2022 (diff | hist) . . (+3,581) . . N 2022 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>ABC</math> be an acute-angled triangle in which <math>BC<AB</math> and <math>BC<CA</math>. Let point <math>P</math> lie on segment <math>AB...")
- 14:07, 24 December 2022 (diff | hist) . . (+2,978) . . N 2021 EGMO Problems (Created page with "==Day 1== ===Problem 1=== The number 2021 is fantabulous. For any positive integer <math>m</math>, if any element of the set <math>\{m, 2m+1, 3m\}</math> is fantabulous, then...") (current)
- 14:05, 24 December 2022 (diff | hist) . . (+3,363) . . N 2020 EGMO Problems (Created page with "==Day 1== ===Problem 1=== The positive integers <math>a_0, a_1, a_2, \ldots, a_{3030}</math> satisfy<cmath>2a_{n + 2} = a_{n + 1} + 4a_n \text{ for } n = 0, 1, 2, \ldots, 3028...") (current)
- 14:03, 24 December 2022 (diff | hist) . . (0) . . 2017 EGMO Problems (current)
- 14:02, 24 December 2022 (diff | hist) . . (-9) . . 2018 EGMO Problems (→Problem 6) (current)
- 14:02, 24 December 2022 (diff | hist) . . (-1) . . 2019 EGMO Problems (→Problem 5) (current)
- 14:01, 24 December 2022 (diff | hist) . . (+3,932) . . N 2019 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Find all triples <math>(a, b, c)</math> of real numbers such that <math>ab + bc + ca = 1</math> and <cmath>a^2b + c = b^2c + a = c^2a + b.</cmath>...")
- 13:59, 24 December 2022 (diff | hist) . . (+3) . . 2017 EGMO Problems (→Problem 5)
- 13:58, 24 December 2022 (diff | hist) . . (-6) . . 2018 EGMO Problems (→Problem 3)
- 13:58, 24 December 2022 (diff | hist) . . (-27) . . 2018 EGMO Problems
- 13:56, 24 December 2022 (diff | hist) . . (+4,703) . . N 2018 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>ABC</math> be a triangle with <math>CA=CB</math> and <math>\angle{ACB}=120^\circ</math>, and let <math>M</math> be the midpoint of <math>AB...")
- 13:53, 24 December 2022 (diff | hist) . . (+2) . . 2017 EGMO Problems (→Problem 2)
- 13:53, 24 December 2022 (diff | hist) . . (-25) . . 2017 EGMO Problems (→Problem 2)
- 13:52, 24 December 2022 (diff | hist) . . (-49) . . 2017 EGMO Problems
- 13:51, 24 December 2022 (diff | hist) . . (+4,231) . . N 2017 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>ABCD</math> be a convex quadrilateral with <math>\angle DAB=\angle BCD=90^{\circ}</math> and <math>\angle ABC> \angle CDA</math>. Let <math...")
- 13:49, 24 December 2022 (diff | hist) . . (+2,948) . . N 2016 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>n</math> be an odd positive integer, and let <math>x_1,x_2,\cdots ,x_n</math> be non-negative real numbers. Show that<cmath> \min_{i=1,\ldo...") (current)
- 13:47, 24 December 2022 (diff | hist) . . (0) . . 2014 EGMO Problems (→Day 2)
- 13:47, 24 December 2022 (diff | hist) . . (0) . . 2014 EGMO Problems (→Day 1)
- 13:47, 24 December 2022 (diff | hist) . . (+2,613) . . N 2015 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>\triangle ABC</math> be an acute-angled triangle, and let <math>D</math> be the foot of the altitude from <math>C.</math> The angle bisecto...") (current)
- 13:45, 24 December 2022 (diff | hist) . . (0) . . 2014 EGMO Problems (→Problem 3)
- 13:45, 24 December 2022 (diff | hist) . . (+2,738) . . N 2014 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Determine all real constants <math>t</math> such that whenever <math>a</math>, <math>b</math> and <math>c</math> are the lengths of sides of a triang...")
- 13:42, 24 December 2022 (diff | hist) . . (-66) . . 2012 EGMO (current)
- 13:41, 24 December 2022 (diff | hist) . . (+9) . . 2012 EGMO
- 13:40, 24 December 2022 (diff | hist) . . (+18) . . 2012 EGMO
- 13:39, 24 December 2022 (diff | hist) . . (+501) . . N 2012 EGMO (Created page with "'''2012 EGMO''' problems and solutions. The first link contains the full set of test problems. The rest contain each individual problem and its solution. 2012 EGMO Prob...")
- 13:37, 24 December 2022 (diff | hist) . . (+2,583) . . N 2013 EGMO Problems (Created page with "==Day 1== ===Problem 1=== The side <math>BC</math> of the triangle <math>ABC</math> is extended beyond <math>C</math> to <math>D</math> so that <math>CD = BC</math>. The side...") (current)
- 10:15, 23 December 2022 (diff | hist) . . (+1) . . 2012 EGMO Problems (→Problem 4) (current)
- 10:15, 23 December 2022 (diff | hist) . . (+2) . . 2012 EGMO Problems (→Problem 6)
- 09:45, 23 December 2022 (diff | hist) . . (+1) . . 2012 EGMO Problems (→Problem 8)
- 09:45, 23 December 2022 (diff | hist) . . (-2) . . 2012 EGMO Problems (→Problem 8)
- 09:45, 23 December 2022 (diff | hist) . . (+1) . . 2012 EGMO Problems (→Problem 6)
- 09:44, 23 December 2022 (diff | hist) . . (+1) . . 2012 EGMO Problems (→Problem 3)
- 09:44, 23 December 2022 (diff | hist) . . (+1) . . 2012 EGMO Problems (→Problem 1)
- 09:44, 23 December 2022 (diff | hist) . . (-3) . . 2012 EGMO Problems (→Day 1)
- 09:43, 23 December 2022 (diff | hist) . . (+4,966) . . N 2012 EGMO Problems (Created page with "==Day 1== ===Problem 1=== Let <math>ABC</math> be a triangle with circumcentre <math>O</math>. The points <math>D,E,F</math> lie in the interiors of the sides <math>BC,CA,AB</...")
- 13:38, 12 August 2020 (diff | hist) . . (0) . . User:OlympusHero (→User Count)
- 20:11, 12 July 2020 (diff | hist) . . (+9) . . 1976 AHSME Problems/Problem 5 (→Solution) (current)
- 20:11, 12 July 2020 (diff | hist) . . (+2) . . 1976 AHSME Problems/Problem 6 (→Problem 6) (current)
- 20:10, 12 July 2020 (diff | hist) . . (+805) . . N 1976 AHSME Problems/Problem 6 (Created page with "=Problem 6= If <math>c</math> is a real number and the negative of one of the solutions of <math>x^2-3x+c=0</math> is a solution of <math>x^2+3x-c=0</math>, then the solutions...")
- 20:06, 12 July 2020 (diff | hist) . . (-1) . . 1976 AHSME Problems/Problem 5 (→Problem 5=)
- 20:06, 12 July 2020 (diff | hist) . . (-9) . . 1976 AHSME Problems/Problem 5 (→Solution=)
- 20:06, 12 July 2020 (diff | hist) . . (+774) . . N 1976 AHSME Problems/Problem 5 (Created page with "=Problem 5== How many integers greater than <math>10</math> and less than <math>100</math>, written in base-<math>10</math> notation, are increased by <math>9</math> when thei...")
- 20:04, 12 July 2020 (diff | hist) . . (+70) . . 1976 AHSME Problems/Problem 1 (→Solution)
- 20:03, 12 July 2020 (diff | hist) . . (+79) . . 1976 AHSME Problems/Problem 2 (→Solution) (current)
- 20:03, 12 July 2020 (diff | hist) . . (-93) . . 1976 AHSME Problems/Problem 2 (→1976 AHSME Problems)
- 20:03, 12 July 2020 (diff | hist) . . (+70) . . 1976 AHSME Problems/Problem 3 (→Solution)
- 20:03, 12 July 2020 (diff | hist) . . (-93) . . 1976 AHSME Problems/Problem 3 (→1976 AHSME Problems)
- 20:03, 12 July 2020 (diff | hist) . . (+8) . . 1976 AHSME Problems/Problem 3 (→Solution)
- 20:02, 12 July 2020 (diff | hist) . . (+1) . . 1976 AHSME Problems/Problem 4 (→Solution) (current)
- 20:02, 12 July 2020 (diff | hist) . . (-1) . . 1976 AHSME Problems/Problem 4 (→Solution)
- 20:02, 12 July 2020 (diff | hist) . . (-1) . . 1976 AHSME Problems/Problem 4 (→Solution)
- 20:01, 12 July 2020 (diff | hist) . . (+1,106) . . N 1976 AHSME Problems/Problem 4 (→Problem 4)
- 19:55, 12 July 2020 (diff | hist) . . (+591) . . N 1976 AHSME Problems/Problem 3 (Created page with "==Problem 3== The sum of the distances from one vertex of a square with sides of length <math>2</math> to the midpoints of each of the sides of the square is <math>\textbf{(...")
- 19:53, 12 July 2020 (diff | hist) . . (+92) . . 1976 AHSME Problems/Problem 2 (→Solution)
- 19:52, 12 July 2020 (diff | hist) . . (+587) . . N 1976 AHSME Problems/Problem 2 (Created page with "== Problem 2 == For how many real numbers <math>x</math> is <math>\sqrt{-(x+1)^2}</math> a real number? <math>\textbf{(A) }\text{none}\qquad \textbf{(B) }\text{one}\qquad \te...")
- 19:50, 12 July 2020 (diff | hist) . . (+93) . . 1976 AHSME Problems/Problem 19 (→Solution) (current)
- 19:48, 12 July 2020 (diff | hist) . . (+448) . . 1976 AHSME Problems/Problem 19 (→Solution)
- 21:48, 11 July 2020 (diff | hist) . . (+9) . . 1976 AHSME Problems/Problem 1 (→Solution)
- 21:48, 11 July 2020 (diff | hist) . . (+3) . . 1976 AHSME Problems/Problem 1 (→Solution)
- 21:47, 11 July 2020 (diff | hist) . . (+280) . . 1976 AHSME Problems/Problem 1 (→Problem 1)
- 21:45, 11 July 2020 (diff | hist) . . (+256) . . N 1976 AHSME Problems/Problem 1 (→Problem 1)
- 20:18, 20 May 2020 (diff | hist) . . (+1) . . 2005 AMC 10B Problems/Problem 20 (→Solution 3)
- 16:09, 25 February 2020 (diff | hist) . . (+17) . . m AMC historical results (→AMC 10A)
- 13:50, 26 January 2020 (diff | hist) . . (+26) . . AMC historical results (→AMC 10)
- 13:49, 26 January 2020 (diff | hist) . . (+26) . . AMC historical results (→AMC 12)
- 13:49, 26 January 2020 (diff | hist) . . (+13) . . AMC historical results (→AHSME)
- 17:03, 14 January 2020 (diff | hist) . . (+13) . . 2011 AMC 10A Problems/Problem 4 (→Problem)
- 17:03, 14 January 2020 (diff | hist) . . (0) . . 2011 AMC 10A Problems/Problem 4 (→Solution 1)
- 20:46, 12 January 2020 (diff | hist) . . (+104) . . 2009 AMC 10A Problems/Problem 24 (→Solution 1(Easy))
- 21:53, 4 January 2020 (diff | hist) . . (+26) . . 2016 AMC 10B Problems/Problem 25 (→Solution)