Question

Find the lcm and hcf of the following integers by the prime factorization method 1. (12,15 and 29). 2. (17,23 & 29). 3. (8,9 & 25). 4, (72&108). 5. (306&657)

Answer 1

1.180 2.11339 3.180 4.216

Answer 2

12=1,2,3,4,6,12
15=1,3,5
29=1,29.

HCF is 1



17=1,17
23=1,23
29=1,29
HCF is 1


8=1,2,4,8
9=1,3,9
25=1,5,25
HCF is 1

72=1,2,3,4,6,8,9,12,18,24,36,72
108=1,2,3,4,6,9,12,27,36,54,108
HCF is 1728