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If x is a finite set. Let P(X) denote th...

If x is a finite set. Let P(X) denote the set of all subsets of X and let n(X) denote the number of elements in X. If for two finite subsets A, B, n(P(A)) = n(P(B)) + 15 then n(B) = , n(A) =
6,2
8,4
4,0
0,1

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