# The smallest composite number is:

\[{\text{A}}{\text{. }}2\]

${\text{B}}{\text{. 4}}$

${\text{C}}{\text{. 1}}$

${\text{D}}{\text{. None of these}}$

Last updated date: 25th Mar 2023

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Answer

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Hint: A composite number has more than two factors.

As we know that a composite number is a whole number that can be made by multiplying other whole numbers except one

Also by definition of prime numbers 2 is a prime number so that’s not a composite number

And 1 is neither prime nor composite.

Hence we only have 4 in the given options which can be made by $2 \times 2\times 1$

which clearly shows that it has more than two factors (4,2,1)

So 4 is a composite number

Hence answer is option ${\text{B}}$.

Note: In this question it is important to be aware of definitions of prime and composite number. Then, we can observe all the given options to get the answer. We must also note that every number greater than 1 is either prime or composite.

As we know that a composite number is a whole number that can be made by multiplying other whole numbers except one

Also by definition of prime numbers 2 is a prime number so that’s not a composite number

And 1 is neither prime nor composite.

Hence we only have 4 in the given options which can be made by $2 \times 2\times 1$

which clearly shows that it has more than two factors (4,2,1)

So 4 is a composite number

Hence answer is option ${\text{B}}$.

Note: In this question it is important to be aware of definitions of prime and composite number. Then, we can observe all the given options to get the answer. We must also note that every number greater than 1 is either prime or composite.

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