No, their GCF is always odd.
The GCF of 90 and 180 is 90.
No, but it's always an even number.
Always even.
No, it is never even.
Addition of two odd numbers will always give an even number.
The GCF is, yes.
The GCF will, yes.
It is: 1
The GCF of two even numbers is always even.
The sum of two odd numbers is always even.
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 sum of two even numbers is always an even number.
The sum of two even numbers is always an even number.
9 and 126
479 and 958 have a GCF of 479.
4 and 8
You need at least two numbers to find a GCF.