User contributions
- 02:50, 2 January 2022 (diff | hist) . . (+197) . . Mock AMC (→Mock AMC 12)
- 01:48, 7 March 2021 (diff | hist) . . (-6) . . 2020 AIME II Problems/Problem 10 (→Solution 6 (similar ideas to Solution 1, but faster))
- 01:47, 7 March 2021 (diff | hist) . . (+2) . . 2020 AIME II Problems/Problem 10 (→Solution 6 (similar ideas to Solution 1, but faster))
- 01:46, 7 March 2021 (diff | hist) . . (0) . . 2020 AIME II Problems/Problem 10 (→Solution 6 (similar ideas to Solution 1, but faster))
- 01:45, 7 March 2021 (diff | hist) . . (+2) . . 2020 AIME II Problems/Problem 10 (→Solution 5 (similar ideas to Solution 1, but faster))
- 01:44, 7 March 2021 (diff | hist) . . (+1,101) . . 2020 AIME II Problems/Problem 10 (→Solution 5)
- 16:18, 13 February 2021 (diff | hist) . . (+3) . . 2021 AMC 12A Problems/Problem 17 (→Solution 3 (short))
- 16:18, 13 February 2021 (diff | hist) . . (+696) . . 2021 AMC 12A Problems/Problem 17 (→Solution 2 (One Pair of Similar Triangles, then Areas))
- 16:16, 13 February 2021 (diff | hist) . . (+9) . . 2021 AMC 12A Problems/Problem 23 (→Solution 6)
- 16:15, 13 February 2021 (diff | hist) . . (+670) . . 2021 AMC 12A Problems/Problem 23 (→Solution 6 (Casework))
- 16:14, 13 February 2021 (diff | hist) . . (+1,235) . . 2021 AMC 12A Problems/Problem 22 (→Solution 2 (Approximation))
- 16:12, 13 February 2021 (diff | hist) . . (+557) . . 2021 AMC 12B Problems/Problem 17 (→Solution)
- 16:11, 13 February 2021 (diff | hist) . . (+4) . . 2021 AMC 12B Problems/Problem 21 (→Solution 2)
- 16:10, 13 February 2021 (diff | hist) . . (+1,114) . . 2021 AMC 12B Problems/Problem 21 (→Solution (Rough Approximation))
- 16:08, 13 February 2021 (diff | hist) . . (+9) . . 2021 AMC 12B Problems/Problem 18 (→Solution 4 (funny observations))
- 16:08, 13 February 2021 (diff | hist) . . (+1,770) . . 2021 AMC 12B Problems/Problem 18 (→Solution 3)
- 00:13, 28 February 2020 (diff | hist) . . (+1) . . m 2016 USAMO Problems/Problem 4 (→Solution 2) (current)
- 20:32, 8 February 2020 (diff | hist) . . (+2) . . 2020 AMC 12B Problems/Problem 22 (→Solution 5 (very legit))
- 20:32, 8 February 2020 (diff | hist) . . (+2) . . 2020 AMC 12B Problems/Problem 22 (→Solution 4 (Bash))
- 20:32, 8 February 2020 (diff | hist) . . (-1) . . 2020 AMC 12B Problems/Problem 22 (→Solution 4 (Bash))
- 20:32, 8 February 2020 (diff | hist) . . (+156) . . 2020 AMC 12B Problems/Problem 22 (→Solution 4 (Bash))
- 20:29, 8 February 2020 (diff | hist) . . (+13) . . 2020 AMC 12B Problems/Problem 7 (→Solution 3 (complex))
- 20:29, 8 February 2020 (diff | hist) . . (+629) . . 2020 AMC 12B Problems/Problem 7 (→Solution 2)
- 20:27, 8 February 2020 (diff | hist) . . (+675) . . 2020 AMC 12B Problems/Problem 7 (→Solution)
- 21:27, 21 December 2019 (diff | hist) . . (-5) . . 2016 AIME II Problems/Problem 13 (→Solution 3)
- 21:26, 21 December 2019 (diff | hist) . . (+5) . . 2016 AIME II Problems/Problem 13 (→Solution 3)
- 00:47, 16 March 2019 (diff | hist) . . (+21) . . 2019 AIME I Problems/Problem 5 (→Solution 2)
- 00:46, 16 March 2019 (diff | hist) . . (+2) . . 2019 AIME I Problems/Problem 5 (→Solution 2)
- 00:46, 16 March 2019 (diff | hist) . . (+496) . . 2019 AIME I Problems/Problem 5 (→Solution)
- 17:01, 9 March 2019 (diff | hist) . . (+498) . . 1997 AHSME Problems/Problem 26 (→Solution)
- 02:36, 8 March 2019 (diff | hist) . . (+464) . . 1993 AHSME Problems/Problem 29 (→Solution)
- 02:17, 7 March 2019 (diff | hist) . . (+320) . . 2019 AMC 12B Problems/Problem 10 (→Solution 2 (longer graph theory))
- 01:46, 4 February 2019 (diff | hist) . . (+1) . . 2018 AMC 10A Problems/Problem 21 (→Solution 6 (Cheating with Answer Choices))
- 21:56, 3 February 2019 (diff | hist) . . (+15) . . 2015 AMC 12A Problems/Problem 21 (→Solution 2)
- 21:52, 3 February 2019 (diff | hist) . . (+8) . . 2015 AMC 12A Problems/Problem 21 (→Solution 2)
- 20:45, 31 July 2018 (diff | hist) . . (+118) . . m 2018 AIME II Problems/Problem 10 (→Solution 2)
- 15:42, 6 June 2018 (diff | hist) . . (-44) . . 2018 AIME I Problems/Problem 15 (→Problem 15)
- 21:19, 5 June 2018 (diff | hist) . . (+206) . . USAMO historical results (→USAMO Honorable Mentions)
- 21:17, 5 June 2018 (diff | hist) . . (+178) . . USAMO historical results (→USAMO Winners)
- 20:13, 3 June 2018 (diff | hist) . . (+24) . . USAMO historical results (→USAMO Perfect Scorers)
- 01:15, 1 June 2018 (diff | hist) . . (+2) . . AMC historical results (→AMC 10A)
- 22:05, 30 April 2018 (diff | hist) . . (+20) . . m 2018 AIME I Problems/Problem 12 (→Solution 1)
- 19:47, 27 April 2018 (diff | hist) . . (+1) . . 2018 USAJMO Problems/Problem 6 (→Solution)
- 19:47, 27 April 2018 (diff | hist) . . (+652) . . 2018 USAJMO Problems/Problem 6 (→Solution)
- 01:21, 20 April 2018 (diff | hist) . . (-4) . . 2018 AIME I Problems/Problem 11 (→Solution 3 (Slight Bash))
- 00:59, 20 April 2018 (diff | hist) . . (+45) . . 2018 AIME I Problems/Problem 6 (→Solution 3)
- 00:58, 20 April 2018 (diff | hist) . . (-23) . . 2018 AIME I Problems/Problem 6 (→Solution 3)
- 00:56, 20 April 2018 (diff | hist) . . (-21) . . 2018 AIME I Problems/Problem 6 (→Solution 3)
- 00:55, 20 April 2018 (diff | hist) . . (+1) . . 2018 AIME I Problems/Problem 6 (→Solution 3)
- 00:54, 20 April 2018 (diff | hist) . . (+12) . . 2018 AIME I Problems/Problem 6 (→Solution 3)
- 00:54, 20 April 2018 (diff | hist) . . (+155) . . 2018 AIME I Problems/Problem 6 (→Solution 3)
- 00:47, 20 April 2018 (diff | hist) . . (+625) . . 2018 AIME I Problems/Problem 6 (→Solution 2)
- 20:24, 18 April 2018 (diff | hist) . . (+37) . . 2018 AIME I Problems/Problem 11 (→Modular Arithmetic Solution- Strange (MASS))
- 20:23, 18 April 2018 (diff | hist) . . (+14) . . m 2018 AIME I Problems/Problem 11 (→Solution 3)
- 20:28, 17 April 2018 (diff | hist) . . (+179) . . 2018 AIME II Problems/Problem 8 (→Solution 1)
- 17:40, 17 April 2018 (diff | hist) . . (-6) . . 2018 AMC 10B Problems/Problem 25 (→Solution 3)
- 17:40, 17 April 2018 (diff | hist) . . (+5) . . 2018 AMC 10B Problems/Problem 25 (→Solution 3)
- 17:39, 17 April 2018 (diff | hist) . . (+15) . . 2018 AMC 10B Problems/Problem 25 (→Solution 3)
- 18:23, 16 April 2018 (diff | hist) . . (+47) . . 2017 USAJMO Problems/Problem 5 (→Solution)
- 22:05, 8 March 2018 (diff | hist) . . (-73) . . 2018 AIME I Problems (→See Also)
- 22:04, 8 March 2018 (diff | hist) . . (-1) . . 2018 AIME I Problems (→Problem 13)
- 22:04, 8 March 2018 (diff | hist) . . (+74) . . 2018 AIME I Problems (→Problem 13)
- 18:59, 8 March 2018 (diff | hist) . . (+67) . . Geometry/Resources (→Olympiad)
- 01:45, 8 March 2018 (diff | hist) . . (+990) . . 2018 AIME I Problems/Problem 10 (→Solution)
- 21:48, 7 March 2018 (diff | hist) . . (+1,019) . . 2018 AIME I Problems (→Problem 10)
- 20:07, 7 March 2018 (diff | hist) . . (+2) . . 2018 AIME I Problems/Problem 11 (→Modular Arithmetic Solution- Strange (MASS))
- 20:06, 7 March 2018 (diff | hist) . . (+29) . . 2018 AIME I Problems (→Problem 10)
- 13:10, 4 March 2018 (diff | hist) . . (+361) . . 2012 AIME I Problems/Problem 7 (→Solution 1)
- 01:43, 24 February 2018 (diff | hist) . . (+54) . . 1984 AIME Problems/Problem 7 (→Solution 2)
- 20:12, 22 February 2018 (diff | hist) . . (-96) . . 2018 AMC 10B Problems/Problem 25 (→Yet Another Solution)
- 20:02, 22 February 2018 (diff | hist) . . (+26) . . 2018 AMC 10B Problems/Problem 11 (→Solution 3)
- 03:14, 19 February 2018 (diff | hist) . . (+7) . . 2018 AMC 10A Problems/Problem 12 (→Solution 3)
- 02:21, 19 February 2018 (diff | hist) . . (+98) . . 2018 AMC 10B Problems/Problem 16 (→Solution 1)
- 01:56, 15 February 2018 (diff | hist) . . (0) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8)
- 01:55, 15 February 2018 (diff | hist) . . (+306) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8)
- 01:53, 15 February 2018 (diff | hist) . . (+232) . . m 2018 AMC 10A Problems/Problem 14 (→Solution 8)
- 01:49, 15 February 2018 (diff | hist) . . (+5) . . 2018 AMC 10A Problems/Problem 21 (→Solution 5 (Cheating with Answer Choices))
- 01:24, 13 February 2018 (diff | hist) . . (+2) . . Mock AIME 1 2007-2008 Problems (→Problem 9)
- 00:47, 12 February 2018 (diff | hist) . . (+6) . . 2018 AMC 12A Problems/Problem 24 (→Solution 3)
- 00:42, 12 February 2018 (diff | hist) . . (+13) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 00:42, 12 February 2018 (diff | hist) . . (+1) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 19:54, 11 February 2018 (diff | hist) . . (+7) . . 2018 AMC 10A Problems/Problem 12 (→Solution 3)
- 19:51, 11 February 2018 (diff | hist) . . (+48) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 19:51, 11 February 2018 (diff | hist) . . (-46) . . 2018 AMC 10A Problems/Problem 14 (→Solution 7)
- 19:50, 11 February 2018 (diff | hist) . . (-1) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 19:50, 11 February 2018 (diff | hist) . . (+1) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 19:50, 11 February 2018 (diff | hist) . . (+258) . . 2018 AMC 10A Problems/Problem 14 (→Solution 7)
- 19:49, 11 February 2018 (diff | hist) . . (-260) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 19:49, 11 February 2018 (diff | hist) . . (+260) . . 2018 AMC 10A Problems/Problem 14 (→Solution 7)
- 19:49, 11 February 2018 (diff | hist) . . (-260) . . 2018 AMC 10A Problems/Problem 14 (→Solution 8 (Similar to averaging logic))
- 19:49, 11 February 2018 (diff | hist) . . (+260) . . 2018 AMC 10A Problems/Problem 14 (→Solution 7)
- 19:14, 11 February 2018 (diff | hist) . . (0) . . 2010 AMC 12A Problems/Problem 24 (→Solution)
- 14:35, 11 February 2018 (diff | hist) . . (-1) . . 2016 AMC 10B Problems/Problem 10 (→Solution 3)
- 14:35, 11 February 2018 (diff | hist) . . (+1) . . 2016 AMC 10B Problems/Problem 10 (→Solution 3)
- 14:34, 11 February 2018 (diff | hist) . . (+445) . . 2016 AMC 10B Problems/Problem 10 (→Solution 2)
- 19:27, 9 February 2018 (diff | hist) . . (+336) . . 2018 AMC 10A Problems/Problem 12 (→Solution 3 (do not use in the real test))
- 13:30, 9 February 2018 (diff | hist) . . (-38) . . 2018 AMC 10A Problems/Problem 9 (→Solution 2)
- 13:29, 9 February 2018 (diff | hist) . . (+38) . . 2018 AMC 10A Problems/Problem 9 (→Solution 1)
- 13:25, 9 February 2018 (diff | hist) . . (+152) . . 2017 AMC 10A Problems/Problem 6 (→Solution)
- 01:28, 9 February 2018 (diff | hist) . . (+12) . . 2018 AMC 10A Problems/Problem 23 (→Solution 1)
- 01:28, 9 February 2018 (diff | hist) . . (+256) . . 2018 AMC 10A Problems/Problem 23 (→Solution)
- 01:07, 9 February 2018 (diff | hist) . . (+1) . . 2018 AMC 10A Problems/Problem 21 (→Solution 5 (Cheating with Answer Choices))
- 01:06, 9 February 2018 (diff | hist) . . (+1,389) . . 2018 AMC 10A Problems/Problem 18 (→Solution 3 (Quick Solution))
- 00:15, 9 February 2018 (diff | hist) . . (-1) . . 2018 AMC 10A Problems/Problem 21 (→Solution 5 (Cheating with Answer Choices))
- 00:15, 9 February 2018 (diff | hist) . . (+332) . . 2018 AMC 10A Problems/Problem 21 (→Solution 4)
- 18:44, 8 February 2018 (diff | hist) . . (+437) . . 2005 AMC 10A Problems/Problem 23 (→Solution 4)
- 20:54, 7 February 2018 (diff | hist) . . (+21) . . 2010 AMC 12A Problems/Problem 13 (→Solution 3 (Algebra))
- 20:51, 7 February 2018 (diff | hist) . . (+11) . . m 2010 AMC 12A Problems/Problem 13 (→Solution 3)
- 20:51, 7 February 2018 (diff | hist) . . (+636) . . 2010 AMC 12A Problems/Problem 13 (→Solution 2)
- 01:51, 7 February 2018 (diff | hist) . . (+2) . . 2003 AMC 10B Problems/Problem 25 (→Solution 5 (Even Faster))
- 01:50, 7 February 2018 (diff | hist) . . (-3) . . 2003 AMC 10B Problems/Problem 25 (→Solution 5 (Even Faster))
- 01:49, 7 February 2018 (diff | hist) . . (+7) . . 2003 AMC 10B Problems/Problem 25 (→Solution 5 (Even Faster))
- 01:48, 7 February 2018 (diff | hist) . . (-1) . . 2003 AMC 10B Problems/Problem 25 (→Solution 5 (Even Faster))
- 01:47, 7 February 2018 (diff | hist) . . (+389) . . 2003 AMC 10B Problems/Problem 25 (→Solution 4(extremely fast))
- 01:35, 7 February 2018 (diff | hist) . . (+274) . . 1950 AHSME Problems/Problem 45 (→Solution)
- 21:30, 2 February 2018 (diff | hist) . . (+56) . . m 2016 AMC 12B Problems/Problem 5 (→Solution)
- 20:22, 1 February 2018 (diff | hist) . . (+267) . . Principle of Inclusion-Exclusion (→Application)
- 19:54, 1 February 2018 (diff | hist) . . (+1) . . m 2017 AMC 12B Problems/Problem 7 (→Solution)
- 02:08, 28 January 2018 (diff | hist) . . (+279) . . 2016 AMC 10A Problems/Problem 20 (→Solution)
- 14:56, 12 January 2018 (diff | hist) . . (+31) . . m 2011 AMC 10B Problems/Problem 21 (→Solution 3)
- 02:59, 11 January 2018 (diff | hist) . . (+658) . . 2011 AMC 10A Problems/Problem 17 (→Solution)
- 02:58, 11 January 2018 (diff | hist) . . (-659) . . 2011 AMC 10A Problems/Problem 17 (→Solution 2)
- 02:58, 11 January 2018 (diff | hist) . . (+659) . . 2011 AMC 10A Problems/Problem 17 (→Solution 2)
- 01:06, 10 January 2018 (diff | hist) . . (+49) . . m Mathematical Olympiad Summer Program (→Information)
- 21:28, 3 January 2018 (diff | hist) . . (-1) . . m Euler's totient function (→Formulas)
- 21:27, 3 January 2018 (diff | hist) . . (+190) . . Euler's totient function (→Formulas)
- 21:38, 31 December 2017 (diff | hist) . . (+110) . . Sophie Germain Identity (→Intermediate)
- 02:30, 30 December 2017 (diff | hist) . . (-9) . . m 1975 USAMO Problems/Problem 5 (→Solution 3) (current)
- 02:29, 30 December 2017 (diff | hist) . . (+21) . . m 1975 USAMO Problems/Problem 1 (→Background Knowledge)
- 01:06, 30 December 2017 (diff | hist) . . (+685) . . 1996 USAMO Problems/Problem 3 (→Solution)
- 20:23, 25 December 2017 (diff | hist) . . (+59) . . 2009 AMC 10A Problems/Problem 5 (→Solution 1)
- 15:57, 24 December 2017 (diff | hist) . . (+151) . . 2015 AMC 12B Problems/Problem 22 (→Solution 3)
- 15:55, 24 December 2017 (diff | hist) . . (+665) . . 2015 AMC 12B Problems/Problem 22 (→Solution 3)
- 21:18, 13 December 2017 (diff | hist) . . (+52) . . m Gmaas (→Known Facts About Gmaas)
- 22:43, 4 December 2017 (diff | hist) . . (0) . . m 2015 AMC 12A Problems/Problem 21 (→Solution 2)
- 23:57, 3 December 2017 (diff | hist) . . (+5) . . 2015 AMC 12A Problems/Problem 22 (→Solution)
- 23:57, 3 December 2017 (diff | hist) . . (+165) . . 2015 AMC 12A Problems/Problem 22 (→Solution)
- 18:41, 2 December 2017 (diff | hist) . . (+14) . . m 2015 AMC 12A Problems/Problem 21 (→Solution 2)
- 18:40, 2 December 2017 (diff | hist) . . (-23) . . 2015 AMC 12A Problems/Problem 21 (→Solution 2 (Basically Solution 1))
- 18:40, 2 December 2017 (diff | hist) . . (+339) . . m 2015 AMC 12A Problems/Problem 21 (→Solution 2)
- 18:36, 2 December 2017 (diff | hist) . . (+1) . . m 2015 AMC 12A Problems/Problem 21 (→Solution 2 (Basically Solution 1))
- 18:35, 2 December 2017 (diff | hist) . . (+20) . . 2015 AMC 12A Problems/Problem 21 (→Solution 2 (Basically Solution 1))
- 18:34, 2 December 2017 (diff | hist) . . (0) . . 2015 AMC 12A Problems/Problem 21 (→Solution 2 (Basically Solution 1))
- 18:33, 2 December 2017 (diff | hist) . . (+753) . . 2015 AMC 12A Problems/Problem 21 (→Solution)
- 14:48, 29 November 2017 (diff | hist) . . (+33) . . m 1987 AIME Problems/Problem 14 (→Solution)
- 19:53, 28 November 2017 (diff | hist) . . (+456) . . 2017 AMC 12B Problems/Problem 22 (→Solution 2 (Less Casework))
- 22:08, 27 November 2017 (diff | hist) . . (+5) . . m 2017 AMC 12B Problems/Problem 22 (→Solution 2 (Casework))
- 22:04, 27 November 2017 (diff | hist) . . (+878) . . 2017 AMC 12B Problems/Problem 22 (→Solution 2 (Casework))
- 21:56, 27 November 2017 (diff | hist) . . (+27) . . 2017 AMC 12B Problems/Problem 22 (→Solution)
- 22:37, 26 November 2017 (diff | hist) . . (+2) . . m 2016 AMC 12B Problems/Problem 18 (→Solution)
- 21:14, 21 November 2017 (diff | hist) . . (+126) . . m 2016 AMC 10A Problems/Problem 25 (→Solution 3 (Less Casework!))
- 02:42, 21 November 2017 (diff | hist) . . (+656) . . 1987 AIME Problems/Problem 14 (→Solution)
- 02:41, 21 November 2017 (diff | hist) . . (+33) . . m 1987 AIME Problems/Problem 14 (→Solution)
- 02:40, 21 November 2017 (diff | hist) . . (+198) . . m 1987 AIME Problems/Problem 14 (→Solution)
- 01:48, 10 November 2017 (diff | hist) . . (+361) . . 2016 AMC 8 Problems/Problem 25 (→Solution 4: Inscribed Circle)
- 01:45, 10 November 2017 (diff | hist) . . (+142) . . 2016 AMC 8 Problems/Problem 25 (→Solution 4: Inscribed Circle)
- 16:36, 9 November 2017 (diff | hist) . . (+35) . . m 1987 AIME Problems/Problem 14 (→Solution)
- 20:58, 8 November 2017 (diff | hist) . . (+24) . . m How should I prepare? (→Summer Camps)
- 20:33, 8 November 2017 (diff | hist) . . (+4) . . m 2010 AMC 12A Problems/Problem 20 (→Solution 3)
- 12:44, 3 November 2017 (diff | hist) . . (+19) . . m 2014 AMC 10B Problems/Problem 24 (→Solution 1)
- 17:45, 13 October 2017 (diff | hist) . . (+19) . . m 2005 AIME II Problems/Problem 12 (→Solution 3)
- 01:47, 1 October 2017 (diff | hist) . . (+1) . . m 2014 AIME II Problems/Problem 12 (→Solution 1)
- 01:47, 1 October 2017 (diff | hist) . . (+1) . . 2014 AIME II Problems/Problem 12 (→Solution 1)
- 01:47, 1 October 2017 (diff | hist) . . (+62) . . m 2014 AIME II Problems/Problem 12 (→Solution 1)
- 19:57, 30 September 2017 (diff | hist) . . (+1) . . m 2014 AIME II Problems/Problem 12 (→Solution 1)
- 02:25, 30 September 2017 (diff | hist) . . (+1) . . m 2014 AIME II Problems/Problem 12 (→Solution 1)
- 22:39, 29 September 2017 (diff | hist) . . (+1) . . m 2014 AIME II Problems/Problem 12 (→Solution 1)
- 21:32, 18 August 2017 (diff | hist) . . (-1,157) . . 2015 AIME I Problems/Problem 11 (→Solution 2 (Trig))
- 21:29, 18 August 2017 (diff | hist) . . (+1,157) . . 2015 AIME I Problems/Problem 11 (→Solution 2 (Trig))
- 20:43, 8 January 2017 (diff | hist) . . (+602) . . 2011 AMC 10B Problems/Problem 21 (→Solution)
- 21:01, 12 August 2015 (diff | hist) . . (+1) . . Trivial Inequality (→Statement)