Let the number of elements in sets $A$ and $B$ be five and two respectively. Then the number of subsets of $A \times B$ each having at least 3 and at most 6 elements is (1) 752 (2) 782 (3) 792 (4) 772
Let the number of elements in sets $A$ and $B$ be five and two respectively. Then the number of subsets of $A \times B$ each having at least 3 and at most 6 elements is\\
(1) 752\\
(2) 782\\
(3) 792\\
(4) 772