18 October 2025

• 02:3902:39, 18 October 2025 diff hist +1,607 1980 USAMO Problems/Problem 2 Added Solution 2 current

24 April 2025

• 23:1723:17, 24 April 2025 diff hist 0 2025 USAJMO Problems/Problem 4 →Solution: Edited cyc to sym in sum

13 March 2020

• 17:2917:29, 13 March 2020 diff hist +423 2020 AIME I Problems/Problem 8 Made Solution 2 (Complex) more clear
• 13:1313:13, 13 March 2020 diff hist 0 m 2020 AIME I Problems/Problem 1 Slight change to location of label "A" in diagram
• 13:1013:10, 13 March 2020 diff hist +700 2020 AIME I Problems/Problem 9 Added a diagram
• 12:5712:57, 13 March 2020 diff hist +648 2020 AIME I Problems/Problem 6 →Solution
• 12:4312:43, 13 March 2020 diff hist +524 2020 AIME I Problems/Problem 8 →Solution 1 (Coordinates)

12 March 2020

• 23:0323:03, 12 March 2020 diff hist +317 2020 AIME I Problems/Problem 1 →Solution
• 18:2018:20, 12 March 2020 diff hist −2 m 2020 AIME I Problems/Problem 15 →Solution 2
• 18:1918:19, 12 March 2020 diff hist +3,366 2020 AIME I Problems/Problem 15 →Solution 2
• 16:3716:37, 12 March 2020 diff hist +18 m 2020 AIME I Problems/Problem 15 →Solution

16 April 2019

• 21:3021:30, 16 April 2019 diff hist +60 2017 USAJMO Problems/Problem 4 The solution is wrong.

21 February 2019

• 11:3911:39, 21 February 2019 diff hist −3 m AMC historical results →AMC 12B
• 11:3911:39, 21 February 2019 diff hist 0 m AMC historical results →AMC 12A
• 11:3811:38, 21 February 2019 diff hist 0 AMC historical results →AMC 10B

9 February 2019

• 18:5518:55, 9 February 2019 diff hist +146 2019 AMC 10A Problems/Problem 10 →Solution
• 18:1618:16, 9 February 2019 diff hist +1,589 2019 AMC 10A Problems/Problem 24 →Solution

6 November 2018

• 20:3520:35, 6 November 2018 diff hist +3,300 2018 USAMO Problems/Problem 6 Added in a solution. Sorry if the solution is hard to follow and for the frequent change in variables.

19 June 2018

• 12:3212:32, 19 June 2018 diff hist +1,936 2017 AMC 12A Problems/Problem 25 Solution 3: Generating Functions

7 March 2018

• 20:1320:13, 7 March 2018 diff hist −420 2018 AIME I Problems/Problem 8 →Solution Diagram
• 20:1020:10, 7 March 2018 diff hist +167 N File:2018 AIME I-8.png Diagram for the problem, showing the hexagon, an equilateral triangle that can be formed by extending the sides, and the largest circle that can be fit in the hexagon. current
• 18:3018:30, 7 March 2018 diff hist +475 2018 AIME I Problems/Problem 8 →Solution Diagram
• 17:5617:56, 7 March 2018 diff hist −99 m 2018 AIME I Problems/Problem 9 →Solution Exclusion Awareness
• 16:5116:51, 7 March 2018 diff hist +30 m 2018 AIME I Problems/Problem 10 →Solution
• 16:3516:35, 7 March 2018 diff hist −3 m 2018 AIME I Problems/Problem 10 →Solution
• 16:3416:34, 7 March 2018 diff hist −5 2018 AIME I Problems/Problem 10 →Solution
• 16:3416:34, 7 March 2018 diff hist +6 2018 AIME I Problems/Problem 10 →Solution
• 16:3316:33, 7 March 2018 diff hist +3,466 N 2018 AIME I Problems/Problem 10 Created page with "The wheel shown below consists of two circles and five spokes, with a label at each point where a spoke meets a circle. A bug walks along the wheel, starting at point <math>A<..."

15 December 2017

• 16:2616:26, 15 December 2017 diff hist +20 N 2011 PuMAC Problems/Geometry Problem A1 Created page with "It's just always 196"

19 September 2017

• 17:2717:27, 19 September 2017 diff hist +1,985 2005 AIME II Problems/Problem 15 →Solution 3
• 16:5016:50, 19 September 2017 diff hist 0 File:2005 AIME II -15.png Cooljoseph uploaded a new version of File:2005 AIME II -15.png current
• 16:4816:48, 19 September 2017 diff hist +22 N File:2005 AIME II -15.png Diagram for solution 3

2 September 2017

• 17:4917:49, 2 September 2017 diff hist +1,179 2003 AIME II Problems/Problem 14 →Solution 2

13 June 2017

• 12:1812:18, 13 June 2017 diff hist +66 2001 AMC 12 Problems/Problem 12 →Solution 2
• 12:1612:16, 13 June 2017 diff hist −2 2001 AMC 12 Problems/Problem 12 →Solution 3
• 12:1612:16, 13 June 2017 diff hist +4 2001 AMC 12 Problems/Problem 12 →Solution 3
• 12:1612:16, 13 June 2017 diff hist −2 2001 AMC 12 Problems/Problem 12 →Solution 1
• 12:1512:15, 13 June 2017 diff hist +417 2001 AMC 12 Problems/Problem 12 →Solution 2

8 February 2017

• 20:2020:20, 8 February 2017 diff hist +209 2017 AMC 10A Problems/Problem 1 →Solution 3

23 November 2016

• 11:1611:16, 23 November 2016 diff hist 0 2016 AMC 8 Problems/Problem 16 No edit summary
• 11:1211:12, 23 November 2016 diff hist +170 2016 AMC 8 Problems/Problem 16 Solution to the problem