A prime number is a number that is divisible only by itself and 1. Which of the following is not a prime number?

A prime number is a number that is divisible only by itself and 1. Which of the following is not a prime number?

a) 2
b) 7
c) 99
d) 181

From the Combined Bank Assistant Programmer (CSE) 2020 – Preliminary (DU) exam, question 19 of 47.

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