Question

What is the Hcf of 70,210,315​

Answer 1

Answer:

The highest common factor is found by multiplying all the factors which appear in both lists: So the HCF of 60 and 72 is 2 × 2 × 3 which is 12. The lowest common multiple is found by multiplying all the factors which appear in either list: So the LCM of 60 and 72 is 2 × 2 × 2 × 3 × 3 × 5 which is 360.

now do it yourself...

Answer 2

35

Prime factorization of the numbers:

70 = 2 × 5 × 7

210 = 2 × 3 × 5 × 7

315 = 3 × 3 × 5 × 7

GCF(70, 210, 315)

= 5 × 7

= 35