User contributions
- 21:00, 10 April 2019 (diff | hist) . . (+13) . . m Sigma notation (→Description)
- 22:33, 7 March 2018 (diff | hist) . . (+97) . . 2018 AIME I Problems/Problem 3 (→Question)
- 16:19, 3 January 2017 (diff | hist) . . (-6) . . m MATHCOUNTS (→Sprint Round)