If P and Q are sets having 5 elements in com-mon, then how many elements do `P xx Q` and `Q xx P` have in common ?

Sets A and B have n element in common. How many elements will (A xx B) and (B xx A) have in common?

If the two sets A and B are having 43 elements in common, then the number of elements common to each of the sets A xx B and B xx A is

If the set A has p elements, B has q elements, then the number of elements in A xx B is

If the set A has p elements, B has. q elements, then the number of elements in A xx B is

Q.how many elements has P(A), if A=phi?

If P={a,b,c} and Q={r}, form the sets P xx Q and Q xx P .

If P={a,b,c} and Q={r}, form the sets P xx Q and Q xx P .