Question

the HCF and LCM of 42 and 72 by prime factorization​

Answer 1

Answer:

Least common multiple (LCM) of 42 and 72 is 504.

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).

We need to calculate greatest common factor 42 and 72, than apply into the LCM equation.

GCF(42,72) = 6

LCM(42,72) = ( 42 × 72) / 6

LCM(42,72) = 3024 / 6

LCM(42,72) = 504

Step-by-step explanation:

Answer 2

Hello mate

42 = 2 ×7×3 and

72 =2×2×2×3×3.

=2*3 × 3*2.

LCM = 2×3×7×2×2×3

=504

HCF. = 2×3

=6.

HOPE IT HELPS

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