User contributions
- 10:06, 18 January 2016 (diff | hist) . . (-321) . . 1989 AIME Problems/Problem 15 (→Solution 4)
- 09:40, 18 January 2016 (diff | hist) . . (+264) . . 1989 AIME Problems/Problem 15 (→Solution 4)
- 09:36, 18 January 2016 (diff | hist) . . (+57) . . 1989 AIME Problems/Problem 15 (→Solution 3)