27 May 2017

• 19:2919:29, 27 May 2017 diff hist +15 m 2012 AIME I Problems/Problem 8 →Solution: think outside the box

21 February 2017

• 18:5518:55, 21 February 2017 diff hist 0 2013 AIME II Problems/Problem 8 →Solution
• 18:5318:53, 21 February 2017 diff hist 0 2013 AIME II Problems/Problem 8 →Solution 1
• 18:3718:37, 21 February 2017 diff hist +4 2013 AIME II Problems/Problem 7 →Solution

28 January 2017

• 18:4318:43, 28 January 2017 diff hist +1 m 2016 AMC 10B Problems/Problem 22 →Problem

23 January 2017

• 19:1419:14, 23 January 2017 diff hist +1 2008 AMC 10B Problems/Problem 18 No edit summary
• 19:1219:12, 23 January 2017 diff hist −2 2008 AMC 10B Problems/Problem 18 →Solution 1
• 19:1219:12, 23 January 2017 diff hist +2 m 2008 AMC 10B Problems/Problem 18 →Solution

9 October 2016

• 17:3717:37, 9 October 2016 diff hist −13 Principle of Inclusion-Exclusion →Examples
• 17:3717:37, 9 October 2016 diff hist +13 Principle of Inclusion-Exclusion →Examples

20 July 2016

• 21:1321:13, 20 July 2016 diff hist −1 Vieta's Formulas →Introduction

12 July 2016

• 18:1518:15, 12 July 2016 diff hist +17 m 2009 AMC 10A Problems/Problem 19 →Solution