Given set is (2, 17, 31) is set of :

(a) Prime numbers

(b) Whole numbers

(c) Odd numbers          

(d) Even numbers

Choose the correct answer from the options given below :

(a) and (b) only

Prime numbers are natural numbers that are divisible by only 1 and the number itself.

Whole numbers include all natural numbers and 0.

Hence, the answer is option 2.