3. Find the LCM and HCF of the following integers by applying the prime factorization method.
(i) 12, 15 and 21 (ii) 17, 23 and 29 (iii) 8, 9 and 25
(i) 12, 15, 21
HCF=Product of the smallest power of each common prime factor in the numbers
LCM=Product of the greatest power of each prime factor involved in the numbers
(ii) 17, 23, 29
HCF=Product of the smallest power of each common prime factor in the numbers
LCM=Product of the greatest power of each prime factor involved in the numbers
(iii) 8, 9, 25
HCF=Product of the smallest power of each common prime factor in the numbers
LCM=Product of the greatest power of each prime factor involved in the numbers
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