1. Let A, B, C be subsets of the universal set U. If n(U) = 692, n(B) = 230, n(C) = 370, n(B∩C) = 20, n(A∩B′∩C′) = 10, find n(A′∩B∩C′).
Let A, B, C be subsets of the universal set U. If n(U) = 692, n(B) = 230, n(C) = 370, n(B∩C) = 20, n(A∩B′∩C′) = 10, find n(A′∩B∩C′).
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