if A and B are two sets, then prove that, `(A cup B)' cup (A' cap B) = A'`.

if X and Y are two sets , then X cap (Y cup X)' equals

If A and B are two sets, then find (A cap B) cup B .

if A and B are two sets them (A-B)cup (B-A)cup (AcapB) is equal to

For sets (A cup B) cup ( A cap B) equals

Prove (A cap B)'=(A' cup B')

If A and B are two sets such that n(A) = 15, n(A cup B) = 40 and n (A cap B) = 5 , then find each of the following : (i) n (B) (ii) n (A- B) (iii) n (B-A)

If A, B and C are three sets such that A cup B = A cup C and A cap B = A cap C , then prove that B = C .

If A and B are two sets such that n(A) = 17,n(B)=23 and n(A cup B) = 38 , then find n(A cap B) .

Use Venn-diagrams to prove that: (A cap B)' = A' cup B'

If A and B are stes, then A cap (A cup B)=