User contributions
- 21:30, 26 June 2011 (diff | hist) . . (0) . . 2011 AMC 12B Problems/Problem 13 (→Solution)
- 21:30, 26 June 2011 (diff | hist) . . (0) . . 2011 AMC 12B Problems/Problem 13 (→Solution)
- 21:29, 26 June 2011 (diff | hist) . . (+903) . . 2011 AMC 12B Problems/Problem 13
