Art of Problem Solving

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For Shiningsunnyday (talk | block log | uploads | logs)

09:06, 18 January 2016 (diff | hist) . . (-321)‎ . . 1989 AIME Problems/Problem 15 ‎ (→‎Solution 4)
08:40, 18 January 2016 (diff | hist) . . (+264)‎ . . 1989 AIME Problems/Problem 15 ‎ (→‎Solution 4)
08:36, 18 January 2016 (diff | hist) . . (+57)‎ . . 1989 AIME Problems/Problem 15 ‎ (→‎Solution 3)

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