Math, asked by baljit31, 1 year ago

find HCF and LCM of12,15,21 by prime factorisation method

Answers

Answered by princessdoll07

6

12 =2×2×3

15 =3×5

21 =3×7

common factor = 3

HCF = 2

LCM =2×2×3×5×7 =420

Answered by VId375

1

Answer:

Step-by-step explanation:

HCF IS= 3 AND

LCM IS = 420

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