23 November 2018

• 13:4913:49, 23 November 2018 diff hist −1 m 2008 AMC 12A Problems/Problem 20 →Solution 3
• 13:4713:47, 23 November 2018 diff hist +15 2008 AMC 12A Problems/Problem 20 →Solution 3

10 August 2018

• 19:5419:54, 10 August 2018 diff hist +1 Normal subgroup →Description

11 August 2017

• 20:2320:23, 11 August 2017 diff hist 0 2000 AMC 12 Problems/Problem 25 →Problem
• 20:2320:23, 11 August 2017 diff hist +1 2000 AMC 12 Problems/Problem 25 →Problem
• 20:2320:23, 11 August 2017 diff hist 0 2000 AMC 12 Problems/Problem 25 →Problem

10 March 2017

• 18:5918:59, 10 March 2017 diff hist −427 2017 AIME I Problems/Problem 8 →Solution 1
• 18:5918:59, 10 March 2017 diff hist +1 2017 AIME I Problems/Problem 8 →Solution 1
• 18:5918:59, 10 March 2017 diff hist +426 m 2017 AIME I Problems/Problem 8 →Solution 1