Question

Find the LCM and HCF of the following integers by applying the prime factorisation method.
(i) and (ii) and (iii) and

Medium
Solution
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Using prime factorisation method:

(i) 12, 15 and 21

Factor of

Factor of

Factor of

HCF 

LCM

(ii) 17, 23 and 29

Factor of

Factor of

Factor of

HCF 

LCM

(iii) 8, 9 and 25

Factor of

Factor of

Factor of

HCF

LCM

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