Explanation:
factors of 36 =1, 2, 3, 4, 6, 9, 12, 18, and 36.
factors of 60=1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60.
common factors=1,2,3,4,5,6,12
greatest common factor = 12(since 12 is the largest)
reth is not correct
because 12 can still divide both numbers