Question

Is 22 a prime number or a composite number?

Answer 1

See a solution process below:

Explanation:

Definition of A Prime Number:
A Prime Number can be divided exactly only by 1, or itself.

And it must be a whole number greater than 1.

`22` is an even number which by definition is divisible by `2`

Therefore `22` is divisible by something other than `1` and itself.

Therefore, `22` is NOT a prime number.

`22 = 2 xx 11`