User contributions
- 22:34, 21 October 2017 (diff | hist) . . (-446) . . Proofs without words (→Summations)
- 17:56, 15 October 2017 (diff | hist) . . (+1) . . 2017 AIME II Problems (→Problem 6)
- 17:56, 15 October 2017 (diff | hist) . . (+4) . . 2017 AIME II Problems (→Problem 6)
- 17:56, 15 October 2017 (diff | hist) . . (-5) . . 2017 AIME II Problems (→Problem 6)