Browse Questions

# If A = {1, 2, 3}, B = {1, 2}, find A $\times$ B. Find the formula for the following relations (if any).  $R_1$ = {(1, 1), (2, 2)}

$R_1$ consists of all those ordered pairs of A $\times$ B whose first coordinates are equal to second coordinates. Hence the formula for $R_1$ is ‘is equal to’.