The GCF is 1.
The GCF is 5.
The GCF is 1.
The GCF of 20 and 21 is 1Factors of 20: 1 2 4 5 10 20Factors of 21: 1 3 7 21The GCF of 20 and 21 is 1
GCF(21, 5, 35) = 1
The GCF is 1.
The GCF of 105 and 147 is 21. Dividing 21 into each of these gives 5 and 7 respectively. These are not further divisible by any number except for 1.
The GCF of 5 and 10 is 5. The GCF of 4 and 12 is 4.
The GCF is 1.
16: 1 2 4 8 16 21: 1 3 7 21 gcf: 1
The GCF of 4, 5, and 8 is 1. Since 4 and 5 are consecutive integers, their GCF is 1.
The GCF of 255 and 525 is 15.The GCF is 15.