What is the HCF of 20, 250 and 120?

15 10 25 20

10

20 = 2 x 2 x 5 250 = 2 x 5 x 5 x 5 120 = 2 x 2 x 2 x 3 x 5 So,  the HCF of 20, 250 and 120 = 2 x 5 = 10