Since 210 is a factor of 420, it is automatically the GCF.
The GCF is 12.
The GCF is 35.
The GCF is 60.
The GCF is 12.
The GCF is 84.
The GCF is 40.
The GCF is 40.
Since 20 is a factor of 320, it is automatically the GCF.
GCF(320, 24, 32) = 8.
The greatest common factor (GCF) of 420, 616 and 2184 is 28.
The GCF is 30.