To find the greatest common factor (GCF) of 8 and 10, we can list the factors of each number.
The factors of 8 are: 1, 2, 4, 8
The factors of 10 are: 1, 2, 5, 10
The common factors of 8 and 10 are: 1, 2
The greatest common factor is the largest of these common factors. Therefore, the GCF of 8 and 10 is:
2