# User contributions

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- 12:48, 2 August 2021 (diff | hist) . . (+15) . . 2015 AIME I Problems/Problem 12 (latex)
- 16:51, 3 June 2021 (diff | hist) . . (+18) . . AoPS Wiki:Competition ratings
- 21:57, 31 May 2021
(diff | hist) . .
**(+10,010)** . . AoPS Wiki:Competition ratings (→Scale) - 21:30, 31 May 2021 (diff | hist) . . (+75) . . AoPS Wiki:Competition ratings (→Scale)
- 11:26, 7 May 2021 (diff | hist) . . (0) . . m 2015 USAMO (wrong year) (current)
- 20:28, 13 March 2021 (diff | hist) . . (0) . . 2021 AIME II Problems (March 18th not March 25th)
- 17:09, 8 March 2021 (diff | hist) . . (+1) . . 1984 AIME Problems/Problem 2 (typo in problem statement makes answer infinity)
- 21:24, 28 February 2021 (diff | hist) . . (-40) . . 2022 AMC 10A (Replaced content with "hai") (Tag: Replaced)
- 21:53, 27 February 2021 (diff | hist) . . (+22) . . Sam Vandervelde (current)
- 15:14, 23 February 2021 (diff | hist) . . (-13) . . AMC historical results (Do not post cutoffs without evidence.)
- 19:14, 22 February 2021 (diff | hist) . . (-2) . . User:V4913 (current)
- 16:26, 14 February 2021 (diff | hist) . . (+1) . . m 2021 AMC 10A Problems/Problem 20 (newline)
- 21:36, 31 January 2021
(diff | hist) . .
**(-1,062)** . . 2021 AMC 10A Problems/Problem 4 (Blanked the page) (Tag: Blanking) - 21:35, 31 January 2021
(diff | hist) . .
**(-617)** . . 2021 AMC 10A Problems/Problem 3 - 21:35, 31 January 2021 (diff | hist) . . (-205) . . 2021 AMC 10A Problems/Problem 2
- 17:45, 30 January 2021 (diff | hist) . . (+54) . . 1991 IMO Problems/Problem 4 (current)
- 17:45, 30 January 2021
(diff | hist) . .
**(+5,758)** . . N 1991 IMO Problems/Problem 3 (Created page with "==Problem== Let <math> S = \{1,2,3,\cdots ,280\}</math>. Find the smallest integer <math> n</math> such that each <math> n</math>-element subset of <math> S</math> contains fi...") (current) - 17:42, 30 January 2021
(diff | hist) . .
**(+10,833)** . . N 1991 IMO Problems/Problem 2 (Created page with "==Problem== Let <math> \,n > 6\,</math> be an integer and <math> \,a_{1},a_{2},\cdots ,a_{k}\,</math> be all the natural numbers less than <math> n</math> and relatively prime...") (current) - 17:36, 30 January 2021 (diff | hist) . . (+68) . . 1991 IMO Problems/Problem 1 (current)
- 17:35, 30 January 2021
(diff | hist) . .
**(+2,733)** . . N 1991 IMO Problems (Created page with "Problems of the 1991 IMO. ==Day I== ===Problem 1=== Given a triangle <math> \,ABC,\,</math> let <math> \,I\,</math> be the center of its inscribed circle. The internal bi...") (current) - 13:54, 30 January 2021 (diff | hist) . . (+16) . . 1990 IMO Problems/Problem 6 (current)
- 13:54, 30 January 2021
(diff | hist) . .
**(+3,218)** . . 1990 IMO Problems/Problem 6 - 13:50, 30 January 2021
(diff | hist) . .
**(+1,729)** . . 1990 IMO Problems/Problem 5 (current) - 13:46, 30 January 2021 (diff | hist) . . (+90) . . 1990 IMO Problems/Problem 4 (current)
- 13:44, 30 January 2021
(diff | hist) . .
**(+5,782)** . . 1990 IMO Problems/Problem 3 - 13:37, 30 January 2021
(diff | hist) . .
**(+905)** . . 1990 IMO Problems/Problem 2 (current) - 13:34, 30 January 2021
(diff | hist) . .
**(+2,078)** . . 1990 IMO Problems/Problem 1 (current) - 13:31, 30 January 2021
(diff | hist) . .
**(+3,331)** . . N 1990 IMO Problems (Created page with "Problems of the 1990 IMO. ==Day I== ===Problem 1=== Chords <math> AB</math> and <math> CD</math> of a circle intersect at a point <math> E</math> inside the circle. Let <...") - 12:05, 30 January 2021 (diff | hist) . . (+62) . . 1989 IMO Problems/Problem 6 (current)
- 12:04, 30 January 2021 (diff | hist) . . (+66) . . 1989 IMO Problems/Problem 6
- 12:03, 30 January 2021
(diff | hist) . .
**(+1,225)** . . 1989 IMO Problems/Problem 5 - 11:57, 30 January 2021 (diff | hist) . . (+54) . . 1989 IMO Problems/Problem 4 (current)
- 11:56, 30 January 2021 (diff | hist) . . (+11) . . 1989 IMO Problems/Problem 3 (current)
- 11:55, 30 January 2021
(diff | hist) . .
**(+3,052)** . . 1989 IMO Problems/Problem 3 - 11:50, 30 January 2021 (diff | hist) . . (+97) . . 1989 IMO Problems/Problem 2 (current)
- 11:47, 30 January 2021
(diff | hist) . .
**(+2,959)** . . N 1989 IMO Problems (Created page with "Problems of the 1989 IMO. ==Day I== ===Problem 1=== Prove that in the set <math> \{1,2, \ldots, 1989\}</math> can be expressed as the disjoint union of subsets <math> A_i...") (current) - 11:39, 30 January 2021 (diff | hist) . . (+11) . . 1988 IMO Problems
- 11:38, 30 January 2021 (diff | hist) . . (+51) . . 1988 IMO Problems/Problem 5 (current)
- 11:38, 30 January 2021
(diff | hist) . .
**(+3,071)** . . 1988 IMO Problems/Problem 5 - 11:36, 30 January 2021 (diff | hist) . . (+79) . . 1988 IMO Problems/Problem 4 (current)
- 11:35, 30 January 2021
(diff | hist) . .
**(+6,188)** . . 1988 IMO Problems/Problem 3 (current) - 11:32, 30 January 2021 (diff | hist) . . (+46) . . 1988 IMO Problems/Problem 2 (current)
- 11:32, 30 January 2021 (diff | hist) . . (+110) . . 1988 IMO Problems/Problem 1 (current)
- 11:29, 30 January 2021
(diff | hist) . .
**(+3,113)** . . 1988 IMO Problems - 11:12, 30 January 2021 (diff | hist) . . (-451) . . 1987 IMO Problems (current)
- 11:12, 30 January 2021 (diff | hist) . . (0) . . 1986 IMO Problems/Problem 6 (current)
- 11:09, 30 January 2021
(diff | hist) . .
**(+5,094)** . . N 1986 IMO Problems/Problem 6 (Created page with "==Problem== Given a finite set of points in the plane, each with integer coordinates, is it always possible to color the points red or white so that for any straight line <mat...") - 11:06, 30 January 2021
(diff | hist) . .
**(+3,891)** . . 1986 IMO Problems/Problem 5 (current) - 11:02, 30 January 2021
(diff | hist) . .
**(+1,608)** . . N 1986 IMO Problems/Problem 4 (Created page with "==Problem== Let <math>A,B</math> be adjacent vertices of a regular <math>n</math>-gon (<math>n\ge5</math>) with center <math>O</math>. A triangle <math>XYZ</math>, which is co...") (current) - 11:01, 30 January 2021
(diff | hist) . .
**(+1,323)** . . N 1986 IMO Problems/Problem 3 (Created page with "==Problem== To each vertex of a regular pentagon an integer is assigned, so that the sum of all five numbers is positive. If three consecutive vertices are assigned the number...")

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