Question

Find hcf 70 105 and 175 by prime factorisation method

Answer 1

Answer:

35

Step-by-step explanation

Prime factorization of 70, 105 and 175 is (2 × 5 × 7), (3 × 5 × 7) and (5 × 5 × 7) respectively. As visible, 70, 105 and 175 have common prime factors. Hence, the HCF of 70, 105 and 175 is 5 × 7 = 35.