Question

find the HCF and LCM of the integer by prime factorisation method. 12,15,21​

Answer 1

Answer:

Step-by-step explanation:

HCF=3

LCM=2520

Answer 2

Prime factorization of

12 = 2×2×3

15 = 3×5

21 = 3×7

So,

LCM = 420

And

HCF = 3

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