Question

Given $A=\{5,6,7\}$ and $B=\{3,4\}$. Form all possible ordered pairs and write the total number of ordered pairs formed so that both the components are from B.

Answer 1

The elements in $A=[5,6,7]$ set are totally different from the elements in set $B=[3,4]$

so there is no way to convert this set into subset lookslike as set $B$

So, answer is $0$