Question

find the LCM and HCF by prime factorisation method 12,28​

Answer 1

Answer:

Step-by-step explanation:

Find the prime factorization of 12

12 = 2 × 2 × 3

Find the prime factorization of 28

28 = 2 × 2 × 7

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 3 × 7

LCM = 84

Answer 2

Step-by-step explanation:

LCM of 12 and 28 = 84.

HCF of 12 and 28 = 4.