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Prime and Composite Numbers

A prime number is a number that has only two factors, 1 and the number itself. 

For example: 2, 3, and 5.

A composite number is a number that has more than two factors (including 1 and itself).

For example: 4, 6, and 10.


The number 1 is neither a prime number nor a composite number.
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Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.