Answer:
1, 2, 4, 8. 8 is the greatest common factor.
Step-by-step explanation:
Find factors of both.
24: 1, 2, 3, 4, 6, 8, 12, 24
136: 1, 2, 4, 8, 17, 34, 68, 136
Find common numbers.
24: 1, 2, 3, 4, 6, 8, 12, 24
136: 1, 2, 4, 8, 17, 34, 68, 136
Factors are 1, 2, 4, and 8.