What numbers have a greatest common factor of 8?

Answer 1

8 and 16, among others.
8 and 16 have a GCF of 8.
8 and 16 have a GCF of 8. So do many other pairs.
8 and 16, among others.
16 and 24
8 and 16.
8 and 16, among many others.

Answer 2

It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question: 8!

Answer 3

It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. A single number has no GCF - because there is no C.

Answer 4

Choose any two numbers (which I will call "a" and "b") that are relatively prime (that is, they have no common factor). For example, two different prime numbers. Multiply each of them by 8; the products wil have the greatest common factor of 8.

Answer 5

8 and 16, for example.

Answer 6

16 and 56