Browse Questions

If A = {1, 2, 3}, B = {1, 2}, find A $\times$ B. Find the formula for the following relations (if any).  $R_2$ = {(1, 2)}

$R_2$ consists of all those ordered pairs of A $\times$ B whose first coordinates are less than the second coordinates. Only one such ordered pair can be had from A $\times$ B which is in $R_2$. Hence the formula that is in $R_2$ is ‘is less than’.