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Omni-MATH / Determine the number of subsets S of 1,2,3,…,10 with the following property: there exist integers a<b<c with a in S, b notin S, c in S. · Discussion

Discussing Determine the number of subsets S of {1,2,3,…,10} with the following property: there exist integers a<b<c with a in S, b notin S, c in S. · Omni-MATH

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