Answer: 2
8: 8,16,24,32,40,48,56,64
2: 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60
10: 10,20,30,40,50,60,70,80
As you can see when skip counting 2's you have the numbers 56 and 46. Therefore the GCF of 56 and 46 is 2.
