Question

Let A = {3, 4, 5} and B = {4, 12, 15}find R, where R is the relation ‘x divides y’ from set A to B. Also find R^–1.

Answer 1

R = {(3, 12), (3, 15), (4, 4), (4, 12), (5, 15)}

R^–1 = {(12, 3), (15, 3), (4, 4), (12, 4), (15, 5)}