30 January 2018

• 22:2622:26, 30 January 2018 diff hist +64 m 2016 AMC 10B Problems/Problem 20 →Solution 2: Geometric

21 April 2017

• 21:0021:00, 21 April 2017 diff hist −1 1997 AJHSME Problems/Problem 19 →Solution 2 current

14 March 2017

• 16:1816:18, 14 March 2017 diff hist +16 m 2017 AMC 10B Problems/Problem 25 →Solution 2 (Cheap Solution)
• 16:1416:14, 14 March 2017 diff hist −7 m 2017 AMC 10B Problems/Problem 4 →Solution (Fakesolving)

7 December 2016

• 22:3322:33, 7 December 2016 diff hist −40 2016 AMC 10A Problems/Problem 17 →Pattern Solution

27 November 2016

• 19:3419:34, 27 November 2016 diff hist +5 2016 AMC 8 Problems/Problem 7 →Solution

11 November 2016

• 16:2716:27, 11 November 2016 diff hist −54 1999 AMC 8 Problems/Problem 25 →Problem

5 November 2016

• 20:4820:48, 5 November 2016 diff hist −24 2016 USAJMO Problems/Problem 1 →Solution 1

10 October 2016

• 18:3118:31, 10 October 2016 diff hist +30 m 1993 AJHSME Problems/Problem 16 →Solution

8 August 2016

• 17:1217:12, 8 August 2016 diff hist +26 2009 AMC 8 Problems/Problem 16 →Problem

7 August 2016

• 15:1915:19, 7 August 2016 diff hist +25 2012 AMC 8 Problems/Problem 21 →Problem
• 15:1715:17, 7 August 2016 diff hist −2 m 2012 AMC 8 Problems/Problem 21 →Problem

14 July 2016

• 16:1616:16, 14 July 2016 diff hist +4 2015 IMO Problems/Problem 1 →See Also

12 July 2016

• 10:3610:36, 12 July 2016 diff hist −7 m Distinguishability →Indistinguishable to distinguishable (Balls and Urns)