Is 15 a factor of 9?

Here we will show you two different methods you can use to determine if 15 is a factor of 9.

The first method entails simply listing all factors of 9 and then seeing if 15 is one of them. The factors of 9 are 1, 3, and 9. Looking at the list, you see that 15 is not on the list, and the answer to "Is 15 a factor of 9?" is therefore no.

For the second and perhaps easier method, we divide 9 by 15 to see if the quotient is a whole number or fractional number. If the quotient is a whole number, then 15 is a factor of 9. If the quotient is a fractional number, then 15 is not a factor of 9.

9 divided by 15 is 0.6 which is a fractional number. Thus, once again, the answer to "Is 15 a factor of 9?" is no.

Factor Checker
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