Let $A$ and $B$ be two sets containing four and two elements respectively. Then the number of subsets of the set $A \times B$, each having at least three elements is (1) 510 (2) 219 (3) 256 (4) 275
Let $A$ and $B$ be two sets containing four and two elements respectively. Then the number of subsets of the set $A \times B$, each having at least three elements is\\
(1) 510\\
(2) 219\\
(3) 256\\
(4) 275