The GCF is 3.
You need at least two numbers to find a GCF. The GCF of 21 and 42 is 21.
The GCF is 3.
The GCF is 7.
The GCF of 9 and 21 is 3.
The GCF of both numbers is 15
You need at least two numbers to find a GCF.
The GCF is 9.
21 and 42 have a GCF of 21. 40 and 80 have a GCF of 40. The GCF of 21 and 40 is 1.
The Greatest Common Factor (GCF) is: 3
15 and 60, respectively.
21 and 42.
The greatest common factor of the numbers 63, 105 and 294 is 21.