Let R be a relation from the set { 1,2,3,...,60} to itself such that R = {(a,b):b = pq, where p,q ? 3 are prime numbers}. Then, the number of elements in R is:: Relation (Mathematics) Question | DivineJEE

Let R be a relation from the set { 1,2,3,...,60} to itself such that R = {(a,b):b = pq, where p,q ? 3 are prime numbers}. Then, the number of elements in R is:: Relation (Mathematics) Question | DivineJEE | divineJEE