Question

.The HCF and the LCM of 12, 21, 15 respectively
are​

Answer 1

Answer:

Lets see -

Step-by-step explanation:

Factors of 12 = 2 x 2 x 3

Factors of 21 = 3 x 7

Factors of 15 = 3 x 5

HCF = 3

LCM = 3 x 2 x 2 x 7 x 5 = 420.

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