Here we will discuss and show you how to figure out which number is a factor of 81, but not a multiple of 30.
The most common way to determine which number is a factor of 81, but not a multiple of 30, is to simply list the factors of 81 and the multiples of 30 so you can compare the two lists.
The answer to "Which number is a factor of 81, but not a multiple of 30?" would be all the numbers that are on the Factors of 81 list, but not on the Multiples of 30 list.
Factors of 81: 1, 3, 9, 27, 81
Multiples of 30: 30, 60, 90, 120, 150...
Answer: 1, 3, 9, 27, 81
Alternatively, you can figure out which number is a factor of 81, but not a multiple of 30, by dividing every factor of 81 by 30. The answer would be all the quotients that are not integers.
Factor, but not a Multiple
You can submit another "Which number is a factor, but not a multiple?" problem below.
Which number is a factor of 82, but not a multiple of 30?
Here is a similar problem in our Multiples database that we have solved for you.