Question

Is 57 composite?

Answer 1

Yes

Explanation:

A composite number is a number expressible as the product of two numbers apart from `1` (or `-1`) and itself (or minus itself).

So in the case of `57`, we are looking for a factorisation other than the trivial `57 = 1 * 57` (or `57 = (-1) * (-57)`).

Note that `5+7 = 12` which is divisible by `3`.

So we can deduce that `57` is divisible by `3`.

In fact:

`57 = 3 * 19`

So `57` is expressible as the product of two non-trivial factors and is therefore composite.

Answer 2

yes

Explanation:

`57 = 19 * 3`

`57` is the product of `19` and `3`.

this means that `57` can be written as the product of two numbers, neither of which are `1` (or `0`).

a composite number is a positive integer (a whole number greater than `0`) that has at least one divisor other than `1` and itself.

only composite numbers can be written as the product of two positive integers, neither of which are `1`.

as the product of `19` and `3`, `57` is composite.

Answer 3

Yes.

`57` is a composite number.

Explanation:

`57` is a composite number because it has more factors other than `1` and `57` .

Also `57` can be uniquely expressed as a product of its Prime factors :-

`57 = 3^(1).19^1`