Is 22 a prime number or a composite number?

1 Answer
smendyka
Mar 7, 2018

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

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