Let A = {p, q, r,s}, B = {p, q, r} and C = {q, s}. Find all sets X such that : `X sub A` and `X cancel (sub) B` .

Let A = {p, q, r,s}, B = {p, q, r} and C = {q, s}. Find all sets X such that : X sub B and X sub C

Let A = {1, 2, 3, 4}, B = {1, 2, 3} and C = {2, 4}. Find all sets X satisfying pair of conditions : X sub B and X cancel (sub) C .

Let A = {1, 2, 3, 4}, B = {1, 2, 3} and C = {2, 4}. Find all sets X satisfying pair of conditions : X sub A, X sub B and X sub C .

Let A = {1, 2, 3, 4}, B = {1, 2, 3} and C = {2, 4}. Find all sets X satisfying pair of conditions : X sub B, X ne B and X cancel (sub) C .

If A xx B = {(p, q), (p, r), (m, q),(m, r)} , find A and B.

Add: p ( p – q), q ( q – r) and r ( r – p)

Let A, B and C be three sets. If A in B and B sub C , is it true that A sub C ? If not, give an example.

Let A={p , q , r , s}\ a n d\ B={1,2,3}dot Which of the following relations from A to B is not function? (i) R_(1) = {(p, 1), (q, 2), (r, 1), (s, 2)} (ii) R_(2) = {(p, 1), (q, 2), (r, 1), (s, 1)} (iii) R_(3) = {(p, 1), (q, 2), (r, 2), (r, 2)} (iv) R_(4) = {(p, 2), (q, 3), (r, 2), (s, 2)}