Difference between revisions of "2001 APMO Problems/Problem 2"

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Latest revision as of 17:02, 26 December 2022

Problem

Find the largest positive integer $N$ so that the number of integers in the set $\{1,2,\dots,N\}$ which are divisible by 3 is equal to the number of integers which are divisible by 5 or 7 (or both).