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Q: Why is 18 a composite number?

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18 is composite.

It is a composite number.

composite The number 18 is a composite number. It is a composite number because composite numbers are whole numbers that have three or more factors.

2 is a prime number. 18 is a composite number.

composite

COMPOSITE

composite

17 is a prime number - the next composite number after 17 is 18.

18 is a composite number because a prime number can only be multiplied by 1 and itself. 18 can be multiplied by 9 and 2 also.

Yes.

The number after 17 is 18.

The factors of 18 are: 1, 2, 3, 6, 9, and 18.Since there are other factors in addition to '1' and the number itself,the number is composite.18 is a composite number because it has more than 2 factors18 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.18 is not prime; it is composite. 18 = 2 * 3 * 3

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