Let A = {2, 3, 4, 5} and B = {1, 3, 4}. If R is the relation from A to B given by a R b iff “a is a divisor of b.” Write R as a set of ordered pairs.

Question

Philoid · Accepted Answer

Given A = {2, 3, 4, 5} and B = {1, 3, 4} and R is a relation from A to B which is true only iff “a is a divisor of b” i.e b is divisible by a.

⇒ R =A × B

⇒ R={(2,4),(4,4),(3,3)}