User contributions
- 18:52, 3 November 2016 (diff | hist) . . (+17) . . Physics competitions
- 22:22, 25 May 2016 (diff | hist) . . (+13) . . 1983 AIME Problems/Problem 15
- 22:21, 25 May 2016 (diff | hist) . . (-2) . . 1983 AIME Problems/Problem 15
- 22:21, 25 May 2016 (diff | hist) . . (+9) . . 1983 AIME Problems/Problem 15
- 23:57, 21 May 2016 (diff | hist) . . (-1) . . 1982 AHSME Problems (→Problem 13)
