if A,B are two sets such that (A)=115 n (B)=326, n(A-B)=47, then write n(A n B).\xa0\xa0

if A,B are two sets such that (A)=115 n (B)=326, n(A-B)=47, then write

1.	if A,B are two sets such that (A)=115 n (B)=326, n(A-B)=47, then write n(A n B).\xa0\xa0
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