Question: If U is universal set and B=U-A, then n(B) = n(U) - n(A). For any three arbitrary sets A, B and C, if C=AB,

If U is universal set and B=U-A, then n(B) = n(U) -

If U is universal set and B=U-A, then n(B) = n(U) - n(A). For any three arbitrary sets A, B and C, if C=AB, then n(C) = n(A) - n(B).

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