no, the GCF for 4 and 2 would be 2, which is even
No. The gcf of 98 and 100 is 2 .
No. The GCF of 3 and 5 is 1. The GCF of 3 and 9 is 3.
Two odd numbers are always even
Because odd numbers don't have any even factors so they can't have any in common.
If x is an odd number that is a common factor of 2 even numbers, so is 2x. So the answer is yes.
Two even numbers won't have an odd GCF.
Yes. The odd number does not have 2 as a factor (or else the number would be even). So the gcf does not have 2 as a factor. So the gcf must be odd.
The GCF is 1.