Question

if the integer m is a multiple of both 10 and 12, then all of the following must be factors of m except

Answer 1

I don't know the answer but I will give you something to help you

Explanation:

Checking the choices, we see that only 8 is not a factor of 60. So (D) must be correct.

We can pick numbers. Because we are told that all of the answer choices except for one "must be factors of m," we know that an answer choice that isn't a factor of m will be the correct answer.

Let's choose a value or m that is permissible. We need a multiple of 10 and 12. Let's choose 60. Let's check each of the answer choices to determine whether any of the choices aren't factors of 60.