User contributions
- 23:01, 15 December 2024 (diff | hist) . . (-42) . . 2009 AMC 12B Problems/Problem 20 (→Solution 3) (current)
- 23:01, 15 December 2024 (diff | hist) . . (+3) . . m 2009 AMC 12B Problems/Problem 20 (→Solution 3)
- 23:00, 15 December 2024 (diff | hist) . . (+11) . . m 2009 AMC 12B Problems/Problem 20 (→Solution 1)
- 22:58, 15 December 2024 (diff | hist) . . (+11) . . m 2009 AMC 12B Problems/Problem 20 (→Solution 2)