IfA and B are two sets such that n(A) = 20, n(B) = 25 and n(A U B) = 4 – InterviewSolution

1.	IfA and B are two sets such that n(A) = 20, n(B) = 25 and n(A U B) = 40, then find n(A 1n(4 )-20, n(B) = 25 and n(A U B) = 40
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