Asked by ikd

wich is not a prime number 11 21 31 41
Answered by Ms. Sue
Which of those numbers can be divided evenly by numbers other than 1 and the number itself?

Study this site, and then we'll be glad to check your answer.

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

Answered by ikd
21
Answered by Ms. Sue
Right!

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