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
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Answer: C. 99
99 is divisible by 3, 9, 11, etc., so it is composite.
Answer: C. 99
99 is divisible by 3, 9, 11, etc., so it is composite.