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- 07:45, 18 November 2020 (diff | hist) . . (+2) . . m 2000 AMC 10 Problems/Problem 20 (→Solution 1)
- 07:45, 18 November 2020 (diff | hist) . . (-2) . . m 2000 AMC 10 Problems/Problem 20 (→Solution 1)
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