Q.Let A,B,C be subsets of the universal set v. If n(v) = 692, n(B) = 230, n(C) = 370, n(B C) 90 ∩ = and n(A B' C') 10 ∩ ∩ =, then n(A' B' C') ∩ ∩ is equal to:
Correct answer: 172
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