1.Let RRR be a relation from the set {1,2,3,…,60}\{1, 2, 3, \dots, 60\}{1,2,3,…,60} to itself such thatR={(a,b):b=pq where p,q≥3 are prime numbers}R = \{(a, b) : b = pq \text{ where } p, q \ge 3 \text{ are prime numbers}\}R={(a,b):b=pq where p,q≥3 are prime numbers}Then the number of elements in RRR is:a.600600600b.660660660c.540540540d.720720720Login to continueOnly logged in users canattempt or see the solution.
