Question

HCF of 1340, 1700, 1100, 1220​

Answer 1

1340 = 2^2 x 5 x 67

1700 = 2^2 x 5^2 x 17

1100 = 2^2 x 5^2 x 11

1220 = 2^2 x 5 x 61

HCF is the product of the highest common factors that are included in all numbers given.

HCF = 2^2 x 5 = 20

Hope this helps.