. Assume that n(U)=70, n(A)=34, and n(B′)=32. Assume further that there are 14 elements of U in A which are not in B. Find the number of elements in B which are not in A

Question

. Assume that n(U)=70n(U)=70, n(A)=34n(A)=34, and n(B′)=32n(B′)=32. Assume further that there are 14 elements of UU in AA which are not in BB.

Find the number of elements in BB which are not in AA

Answer 1

34-14=20 elements in A intersect B.

70-32=38 elements in B.

38-20=18 elements in B not in A.