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 the first component is from B and second is from A.

Find the total number of such pairs.

Answer 1

Possible ordered pairs with first component from Set B and second from set A are $(3,5),(3,6),(3,7),(4,5),(4,6),(4,7)$

Thus, the total no. of ordered pairs formed is $6$.