my mommy and daddy cant explain

Question

explain what is wrong with the reasoning number 5 is a composite number because it has the factors 2 and 2.5

i know its a prime number but i cant explain the answer to the question above.

Answer 1

A Prime Number can be divided evenly only by 1, or itself.
And it must be a whole number greater than 1.

http://www.mathsisfun.com/definitions/prime-number.html

Answer 2

why is it not a composite number

Answer 3

It's not a composite number because it's a prime number.

Study this site.

http://www.mathsisfun.com/definitions/composite-number.html

Answer 4

Mommy and Daddy?