Question

Find the LCM and HCF of 12 15 and 21

Answer 1

Answer:

we know that it's yours is the product of the smallest power of each common prime factor in the numbers and LCM is the product of greatest power of each prime factor involved in the numbers find the HCF and LCM follow the given steps

Step-by-step explanation:

12 =3*2*2

15=3*5

21=3*7

HCF=3

LCM=420

Answer 2

Answer:

12=2*2*3

15=5*3

21=3*7

common numbers=2*2*3*5*7

                              =420

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