Question

Find the common factor of 60,70&120

Answer 1

Step-by-step explanation:

60 = 2*2*3*5

70 = 2*5*7

120 = 2*2*2*3*5

Common factor = 2*5 = 10

Answer 2

Answer:

1, 2, 5, 10

Step-by-step explanation:

Find the individual factors of 60, 70 and 120 (take help of the divisibility rules and crosscheck by each number):

60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

70: 1, 2, 5, 7, 10, 14, 35, 70

120: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120

Now underline the factors that divide all the three numbers.

60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

70: 1, 2, 5, 7, 10, 14, 35, 70

120: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120

Now list the factors that divide all the three numbers without leaving any remainder:

1, 2, 5, 10