I really don't understand this question and I can't seem to be able to solve it. Can anyone help me?

Write a composite number between 7 and 20.

3 answers

Here's an excellent explanation of composite numbers.

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

Two composite numbers are 9 and 10. What other composite numbers can you find?
Thank you the site was very helpful.
You're welcome.
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