Question

Let A = {1, 2, 3}, B = {1, 3, 5}. If relation R from A to B is given by

R = {(1, 3), (2, 5), (3, 3)}. Then, $R^{-1}$ is

• A. {(3, 3), (3, 1), (5, 2),}
• B. {(1, 3), (2, 5), (3, 3),}
• C. {(1, 3), (5, 2)}
• D. None of these

Answer 1

The correct option is A

{(3, 3), (3, 1), (5, 2),}

A = {1, 2, 3}, B = {1, 3, 5}

R = {(1, 3), (2, 5), (3, 3)}

$\therefore R^{-1}=$ {(3, 1), (5, 2), (3, 3)}