Because odd numbers don't have any even factors so they can't have any in common.
It CAN'T be even, since the number 2 is not a factor of the odd number. "Even" means that a number is a multiple of 2.
It is NEVER even. Because no even number can be a factor of the odd number.
No. The gcf of 98 and 100 is 2 .
Yes and yes.
The GCF of any two odd numbers is always odd. The GCF of any two even numbers is always even. The GCF of an odd and an even number is always odd.
The GCF of an odd and even number is never even.
Yes.
Because odd numbers don't have any even factors so they can't have any in common.
The GCF of any two odd numbers is always odd because odd numbers don't have any even factors. The GCF of any two even numbers is always even because even numbers are divisible by two and any common factors would have at least one two in common. The GCF of an even and an odd number is odd because odd numbers don't have any even factors.
No not always as for example the GCF of 7 and 21 is 7
Yes, it must be.
It's not. It's always odd.
The GCF of any set of odd numbers is odd because odd numbers don't have any even factors.
The GCF of an odd and an even number must be odd since odd numbers do not have any even factors.
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.
No, it is not.