16 July 2019

• 23:5423:54, 16 July 2019 diff hist −17 m 2001 AIME I Problems →Problem 15

23 November 2018

• 13:0313:03, 23 November 2018 diff hist +4 m 2018 AMC 8 Problems/Problem 25 →Solution

23 July 2018

• 11:4511:45, 23 July 2018 diff hist +9 m 2005 AIME I Problems →Problem 9

14 November 2017

• 22:2422:24, 14 November 2017 diff hist −12 m American Mathematics Competitions Minor wording adjustment

25 July 2017

• 06:1806:18, 25 July 2017 diff hist +37 m 2005 AMC 12A Problems/Problem 13 →Solution

24 July 2017

• 16:4216:42, 24 July 2017 diff hist +15 m 2005 AMC 12A Problems/Problem 13 →Solution
• 16:4016:40, 24 July 2017 diff hist −23 m 2005 AMC 12A Problems/Problem 13 →Solution
• 16:3816:38, 24 July 2017 diff hist +159 m 2005 AMC 12A Problems/Problem 13 →Problem
• 16:3516:35, 24 July 2017 diff hist +167 m 2005 AMC 12A Problems Fixed wording of Question 13 and added diagram