Composite numbers are numbers divisible by one or more numbers other than 1 and itself.

In other words, we can say that numbers having more than two factors are composite numbers.

**For Example** – 4, 6, 8, 9, 10, 12, 14, 15, 16, 18 are Composite numbers

**Question 1**

Which of the following is a composite number?

8, 2, 7

**Explanation**

Composite numbers are divisible by one or more numbers other than 1 and itself.

In other words, we can say that numbers having more than two factors are composite numbers.

Factors of 8 are 2 x 2 x 2 x 1

Factors of 2 are 2 x 1

Factors of 7 are 7 x 1

Here, Factors of 8 are 2 x 2 x 2 x 1

8 is divisible by 1, 2, 4, 8

Therefore, 8 is a composite number.

**Question 2**

Which of the following is a composite number?

12, 11, 5

**Explanation**

Composite numbers are divisible by one or more numbers other than 1 and itself.

In other words, we can say that numbers having more than two factors are composite numbers.

Factors of 12 are 2 x 2 x 3 x 1

Factors of 11 are 11 x 1

Factors of 5 are 5 x 1

Here, Factors of 12 are 2 x 2 x 3 x 1

12 is divisible by 1, 2, 4, 6, 12

Therefore, 12 is a composite number.

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