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- 23:55, 16 February 2010 (diff | hist) . . (+349) . . N 2002 AMC 10B Problems/Problem 25 (Created page with '== Problem == When 15 is appended to a list of integers, the mean is increased by 2. When 1 is appended to the enlarged list, the mean of the enlarged list is decreased by 1. How…')
