Question

find the HAD and LCD of 90,144 by prime factorisation

Answer 1

Hey dear it's
HCF and LCM

HCF
90 = 2,3,3,5
144 = 2,2,2,2,3,3
Here 2,3,3 is common so 2*3*3 = 18
Hence HCF is 18

LCM
2*2*2*2*3*3*5
720
Hence LCM is 720

Hope it helps
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