Question

Which is a prime number
60
67
65
63

Answer 1

Use the rule of divisibility :
60 is composite because it is even so it can be divided by 2
67 is prime because none if the divisiblility rules work on it
65 is composite because it has a five by the end which means it can be divided by 5
63 is composite because the sum of the digits equal to nine which can be divided by 3 and nine