Just 1.
It is: 1
Just 1.
The GCF is 1.
The only common factor of four and seven is one, because seven is a prime number.
Since 28 is a factor of 84, it is automatically the GCF.
The least common factor is: 1
1
You have infinite options of decimal points, but the obvious ones are: 3, 1.5 and 1
The least common factor of any set of integers is 1.
The GCF is 7.
The greatest common factor of 40 and 65 is 5
20 and 24's highest common factor is four.