Answer:
2
Step-by-step explanation:
The factors of 2 are: 1, 2
The factors of 8 are: 1, 2, 4, 8
The factors of 18 are: 1, 2, 3, 6, 9, 18
The factors of 32 are: 1, 2, 4, 8, 16, 32
see that the common factor is 2 and the greatest
Then the greatest common factor is 2.
