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Omni-MATH / How many ordered pairs (S,T) of subsets of 1,2,3,4,5,6,7,8,9,10 are there whose union contains exactly three elements? · Discussion

Discussing How many ordered pairs (S,T) of subsets of {1,2,3,4,5,6,7,8,9,10} are there whose union contains exactly three elements? · Omni-MATH

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