The GCF is 2.
The GCF is 2.
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 of 52 and 80 is 4.
The GCF of 1218 and 42 is 42. The GCF of 12, 18 and 42 is 6.
The GCF is 21.
The GCF of 18 and 42 is 6. The GCF of 42 and 56 is 14.
The GCF of 42 and 35 is 7.factors of 42: 2,6,7factors of 35: 5,7
Since 7 is a factor of 42, it is automatically the GCF.
The GCF is 6.
The GCF is 42.
The GCF is 7.