Question

Let A = {1, 2, 3, 5, 6} and B = {1, 6, 7, 8}. Let R be a relation from A to B is defined as R = {(a, b) : a > b, a ∈ A and b ∈ B}. Then the number of elements in R is

Answer 1

R = { (2,1) (3,1) (5,1) (6,1) }