Question

Describe the following sets in Roster form: 

{x:x is a prime number which is a divisor of 60}.

Answer 1

All numbers which are divisor of 60 are = 1,2,3,4,5,6,10,12,15,20,30,60.

Now numbers which are prime are = 2,3,5. 

∴ Roster form will be {2,3,5}.