What is the gcf of 40 and 66
the gcf of 40 and 60 is 2.-steps: 40: 1, 2, 4, 5, 8, 10, 20, and 40 60: 1, 2, 3, 6, 11, 22, 33, and 66in the factors of both numbers only number 2 is the common number, so 2 is the gcf of 40 and 66