Question

If $A=\{1,3,5,6\}$ and $B=\{2,4\}$.Find $A\times B$ and $B\times A$

Answer 1

We have $A=\{1,3,5,6\}$ and $B=\{2,4\}$

$A\times B=\{(1,2),(1,4),(3,2),(3,4),(5,2),(5,4),(6,2),(6,4)\}$

$B\times A=\{(2,1),(2,3),(2,5),(2,6),(4,1),(4,3),(4,5),(4,6)\}$