If n(A) = 12 and n `(A n B) = 3, find n (A-B)

Let A and B be two finite sets such that n(A) =85, n(B) = 65and n(A ∪ B) = 135, find n(A ∩ B)?

If A and B are two sets such that : n(A)=20, n (A uu B)=42 and n (A nn B)=4 . Find: n (B), n (A - B) and n (B - A).

Let A and B be Two Given Finite Sets Such That n(A) =20, n(B)=28, and n(A ∪ B) =36, Find n(A ∩ B).

If A and B are two sets such that : n(A)=17, n (A uu B)=38 and n (A nn B)=2 . Find: n (B), n (A - B) and n (B - A).

If n(A) = 5 and n (B) = 7, then the number of relations on A*B is

If n(A) = 3 and n(B) = 4, then the number of injective mapping that can be defined from A to B (a)144 (b)12 (c)24 (d)64

If n(A)=1000, n(B)=500 and if n(AnnB) ge 1 and n(AuuB)=p then