Is 9 a factor of 663?

Here we will show you two different methods you can use to determine if 9 is a factor of 663.

The first method entails simply listing all factors of 663 and then seeing if 9 is one of them. The factors of 663 are 1, 3, 13, 17, 39, 51, 221, and 663. Looking at the list, you see that 9 is not on the list, and the answer to "Is 9 a factor of 663?" is therefore no.

For the second and perhaps easier method, we divide 663 by 9 to see if the quotient is a whole number or fractional number. If the quotient is a whole number, then 9 is a factor of 663. If the quotient is a fractional number, then 9 is not a factor of 663.

663 divided by 9 is 73.66666667 which is a fractional number. Thus, once again, the answer to "Is 9 a factor of 663?" is no.

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Is 9 a factor of 664?
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