User contributions
- 21:28, 17 August 2010 (diff | hist) . . (-129) . . 2005 AMC 10B Problems/Problem 20 (Undo revision 35661 by Fzhou1995 (Talk))
- 21:23, 17 August 2010 (diff | hist) . . (+129) . . 2005 AMC 10B Problems/Problem 20
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