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Find the LCM and HCF of the following in...

Find the LCM and HCF of the following integers by applying the prime factorisation method.` (i) 12,15 and 21           (ii) 17, 23 and 29         (iii)  8,9 and 25`

Text Solution

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1)12,15,21
factors
12=2*2*3
15=3*5
21=3*7
HCF=3
LCM=3*2*2*5*7=420
2)17,23,29
...
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