Question

Find between 408 and 170 lcm and hcm

Answer 1

Hey Mate,

First we need to write the prime factorisation of these numbers :

408 = 2 x 2 x 2 x 3 x 17 = 2³

170 = 2 x 5 x 17

LCM = product of the primes with highest power

        = 2³ x 3 x 5 x 17

        = 8 x 15 x 17

        = 2040

HCF = product of the primes with lowest powers which are common

       = 2 x 17

       = 34

hope it helps you

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