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If n(A)=43, n(B)=51 and n(AcupB)=75, the...

If n(A)=43, n(B)=51 and n(A`cup`B)=75, then n((A-B)`cup`(B-A))=

A

53

B

45

C

56

D

66

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The correct Answer is:
C
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