# User contributions

- 13:29, 12 July 2009
(diff | hist) . .
**(+1,620)** . . 2003 USAMO Problems/Problem 6 (→Solution) - 18:32, 17 October 2008
(diff | hist) . .
**(+2,739)** . . N 2005 USAMO Problems/Problem 4 (New page: =Problem= Legs <math>L_1, L_2, L_3, L_4</math> of a square table each have length <math>n</math>, where <math>n</math> is a positive integer. For how many ordered 4-tuples <math>(k_1, k...) - 14:00, 22 March 2008 (diff | hist) . . (+13) . . 1993 USAMO Problems/Problem 1
- 13:58, 22 March 2008 (diff | hist) . . (0) . . 1993 USAMO
- 13:58, 22 March 2008 (diff | hist) . . (+30) . . 1993 USAMO
- 13:57, 22 March 2008
(diff | hist) . .
**(+1,025)** . . N 1993 USAMO Problems/Problem 1 (New page: ==Problem== For each integer <math>n\ge 2</math>, determine, with proof, which of the two positive real numbers <math>a</math> and <math>b</math> satisfying <cmath>a^n=a+1,\qquad b^{2n}=b+...) - 13:50, 22 March 2008 (diff | hist) . . (-64) . . 1993 USAMO
- 13:50, 22 March 2008 (diff | hist) . . (+8) . . 1993 USAMO
- 13:49, 22 March 2008 (diff | hist) . . (+41) . . 1993 USAMO
- 13:49, 22 March 2008 (diff | hist) . . (+28) . . N 1993 USAMO (New page: ==1993 USAMO== Problem 1)
- 20:37, 22 February 2008 (diff | hist) . . (+412) . . N 1992 USAMO Problems/Problem 3 (New page: ==Problem== Chords <math>AA'</math>, <math>BB'</math>, and <math>CC'</math> of a sphere meet at an interior point <math>P</math> but are not contained in the same plane. The sphere throug...)
- 20:17, 20 February 2008 (diff | hist) . . (+473) . . 1992 USAMO Problems/Problem 2
- 10:36, 27 January 2008
(diff | hist) . .
**(+1,271)** . . 2006 AMC 12B Problems/Problem 21 - 10:19, 27 January 2008 (diff | hist) . . (+16) . . AMC 12 (→Format)
- 17:09, 19 January 2008 (diff | hist) . . (+45) . . 2007 AIME I Problems/Problem 14 (→Solution)
- 17:42, 16 January 2008 (diff | hist) . . (+19) . . 2007 AIME I Problems/Problem 12 (→Solution 4)
- 17:14, 15 January 2008 (diff | hist) . . (+143) . . 1989 USAMO Problems/Problem 1
- 19:39, 13 January 2008
(diff | hist) . .
**(+1,223)** . . 1991 USAMO Problems/Problem 1 - 19:28, 13 January 2008 (diff | hist) . . (+246) . . N 1991 USAMO Problems/Problem 1 (New page: == Problem == In triangle <math>ABC</math>, angle <math>A</math> is twice angle <math>B</math>, angle <math>C</math> is obtuse, and the three side lengths <math>a, b, c</math> are integer...)
- 19:25, 13 January 2008
(diff | hist) . .
**(+636)** . . 1989 USAMO Problems/Problem 2 - 15:36, 3 January 2008 (diff | hist) . . (+207) . . Carl Friedrich Gauss