If `(A uu B) nn (A nn B) = A` , then which of the following is true ?

(A uu B) nn (A uu B ^ (c)) = A

A uu B = A nn B iff :

Let A,B and C be sets such that A nn B sube C and A nn B!=phi. Then which of the following statements is not true?

If A uu B = A uu C and A nn B= A nn C , then

If A and B and C are three non-empty sets, then which of the following is/are not true ? (A) n(A xx B) = n(B xx C) hArr n(A) = n(C) (B) A - (B nn C) = (A - B) nn (A - C) (C ) A uu (B nn C) = (A uu B) nn (A uu C) (D) (A nn B) - C = (A-C) nn (B - C)

If A and B are disjoint sets, then A nn (A' uu B) is equal to which one of the following?

A uu B = (AB) uu (BA) uu (A nn B)

If A uu B=B nn A Prove that A = B .