Question

Use prime Factrization method to determine the HCF of each of the following: (a) 520,1430.
(b) 54,60,72,80​

Answer 1

Answer:

1.

By factorization method,

520=2×2×2×5×13

1430=2×5×11×13

Then HCF (520,1430)=2×5×13=130

Hence, this is the answer.

2.

By factorisation method,

54 = 2 × 3 × 3

60 = 2 × 2 × 3 × 5

72 = 2 × 2 × 2 × 3 × 3

80 = 2 × 2 × 2 × 2 × 5

Then HCF (54,60,72,80)=2