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Omni-MATH / How many non-empty subsets of 1,2,3,4,5,6,7,8 have exactly k elements and do not contain the element k for some k=1,2,…,8. · Discussion

Discussing How many non-empty subsets of {1,2,3,4,5,6,7,8} have exactly k elements and do not contain the element k for some k=1,2,…,8. · Omni-MATH

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