The GCF is 1.
GCF(21, 5, 35) = 1
The GCF is 5.
The GCF of 21, 35 is 7.
The GCF is 5.
The GCF is 7.
The GCF is 5.
The GCF is 5.
The GCF is 5.
It is 5 because: 35-1,5,7,35 20-1,2,4,5,10,20 & 15-1,3,5,15
The GCF is 7.
The GCF of 7, 21 and 35 is 7. This leaves you with 1, 3 and 5 respectively, You can go no further as the only common factor remaining is 1.The factors of 7 are: 1, 7The factors of 21 are: 1, 3, 7, 21The factors of 35 are: 1, 5, 7, 35The common factors are: 1, 7The Greatest Common Factor (GCF) is: 7
The GCF is 5.