Is the greatest common factor of any 2 odd numbers odd?

Answer 1

Not only can they, but they must.

An odd number cannot have an even factor. So none of the factors of either of the two odd numbers can be even and so the GCF is made up of only odd factors and so it must be odd.

Answer 2

No. Odd numbers can't have any even factors, much less a GCF.

Answer 3

That can't happen. Odd numbers don't have even factors.

Answer 4

No. An odd number has no even factor. So two odd numbers can't have the same even factor.

Make sense ?

Answer 5

No, always odd.

Answer 6

No, it is never even.

Answer 7

No.

Answer 8

Yes.