Question

find LCM and HCF of 455 and 78 by using prime factorisation method ​

Answer 1

Answer:

455 = 5 × 13 × 7 and 78 = 2 × 3 × 13.

here 13 is common,so

HCF = 13.

LCM = 2730.

HOPE IT HELPS YOU

Answer 2

Answer:

HCF is 13

Step-by-step explanation:

Factors for 455 is 5*7*13

Factors for 78 is 2*3*13

So the highest common factor is 13

And the least common multiple is 5*7*13*2*3 = 2730