Question: what are the greatest common factors for 60?
Answer: The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72. The common factors of both numbers are 1, 2, 3, 4, 6, and 12. Which means that 12 is the greatest common factors.