Question

Which of the following is a prime number? 99, 53, 117, 121

Answer 1

53

Explanation:

99 can be divisible by 9, 11, 3, and 33. 117 can be divisible by 11 (11x11)

and 117 can be divisible by 1, 3, 9, 13, and 39.

Answer 2

53 is a prime number