Two sets A and B are such that `n(AuuB)=21,n(A'nnB')=9,n(AnnB)=7` find `n(AnnB)'`

If A and B are two sets such that n(AuuB)=50 ,n(A)=28,n(B)=32,then find n(AnnB) .

If U is the universal set with 100 elements, A and B are two sets such that n(A) = 50, n (B) = 60, n(AnnB) = 20 then n(A'nnB') =

For any two sets A and B prove that n(A-B)=n(A)-n(AnnB) .

Establish that: n(A uu B)=n(A)+n(B)-n(AnnB)

If A and B are two sets and n(A) = 15, n(B) = 25 and n(AnnB) = 10 find n(AuuB)

A and B are two sets. If n(A) = 17, n(B) = 23, and n(AuuB) = 38 find n(AnnB) .

If A,B are two sets and U is the universal set such that n(U)=700,n(A)=200,n(B)=300 and n(AnnB)=100 .Find n(A'nnB') .

If A and B are two sets such that n(A)=70 ,\ n(B)=60 ,\ n(AuuB)=110 ,\ then\ n(AnnB) is equal to