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Prime and Composite Numbers

Which of the ...

Question

Which of the following is the smallest prime number?

A

1

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B

2

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C

4

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D

6

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Solution

The correct option is B 2
1 is neither a prime number nor a composite number. It is a unique number with only one factor.

Factors of 2 = 1, 2
So, 2 is the smallest prime number.

Factors of 4 = 1, 2, and 4
Factors of 6 = 1, 2, 3, and 6
These have more than two factors and are composite numbers.

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