Discussion
Which of the following is smallest prime number?
Answer: B
A prime number is a natural number greater than 1 whose only factors are 1 and itself. The number 1 is not prime, because it has only one factor. The number 2 has just the two factors 1 and 2, so it is prime, and it is the smallest prime number, and also the only even prime. The numbers 4 and 6 are composite, since 4 has the factor 2 and 6 has the factors 2 and 3. The answer is 2, option B.
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