If `P=(1,2,3,4,5,6,7)` and `Q=(2,5,8,9)`, then find P-Q.

If P=(1,2,3,4,5,6,7) and Q=(2,5,8,9) , then find P cup Q .

If P=(1,2,3,4,5,6,7) and Q=(2,5,8,9) then find P cap Q .

If the points P (1,2,3), Q(4,5,6) and R(7,8,9) are collinear then Q divides PR in the ratios of -

If P={1,2,5,7,9}, Q={2,3,5,9,11}, R={3,4,6,7,9} and S={2,3,4,5,8} then find (i) (P cup Q) cup R) (ii) (P cap Q) cap S (iii) (Q cap S) cap R

If P = {1, 2, 5, 7, 9}, Q = {2, 3, 5, 9, 11}, R = {3, 4, 5, 7, 9} and S = {2, 3, 4, 5, 8}, then find (PcupQ)cupR

If P = {1, 2, 5, 7, 9}, Q = {2, 3, 5, 9, 11}, R = {3, 4, 5, 7, 9} and S = {2, 3, 4, 5, 8}, then find (QcapS)capR

If P = {1, 2, 5, 7, 9}, Q = {2, 3, 5, 9, 11}, R = {3, 4, 5, 7, 9} and S = {2, 3, 4, 5, 8}, then find (PcapQ)capS