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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