49 If n(U)=50,n(A)=20and n((AUB)')=18 n(B-A) is? – InterviewSolution

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1.	49 If n(U)=50,n(A)=20and n((AUB)')=18 n(B-A) is?
Answer» 49 If n(U)=50,n(A)=20and n((AUB)')=18 n(B-A) is?

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