Sets A and B have n elements in common. How many elements will `(AxxB) and (BxxA)` 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 two-empty sets A and B have n elements in common, then show that AxxB and BxxA have n^(2) elements in common.

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 ?

If A and B have n elements in common , then the number of elements common to A xx B and B xx A is

If two sets A and B are having 99 elements in common to each of the sets A xx B and B xx A are

If two sets A and B have 17 elements in common, then the number of elements common to the set AxxB and BxxA is

If A and B are two non-empty sets having n elements in common , then show that A xx B and B xx A have n^2 elements in common.

A and B are two non empty set having n element in common ; then prove that AxxB and BxxA have n^2 element in common.