The first question you need to investigate: Is there ANYnumber that is a common factor of 21, 30, and 44 ?
If we can't find at least two of them, then we don't have to worry about "greatest".
The factors of 21 are: 1, 3, 7, and 21.
The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, and 30.
The factors of 44 are: 1, 2, 4, 11, 22, and 44.
The only factor common to 21, 30, and 44 is '1'.
Technically, I guess the answer to the question is 'Yes'. There is one common factor, so it's
also the greatest.
The Greatest Common Factor is 2
6
it is: 6
The Greatest Common Factor (GCF) is: 6
101000000
6It is 6
3
6
3
The GCF of 12, 28, and 30 is 2
The greatest common factor (GCF) of 20 and 30 is 10.
The GCF is 3.