The following pairs of numbers have 72 as their LCM
1 & 72
2 & 72
3 & 72
4 & 72
6 & 72
8 & 9
8 & 18
8 & 36
8 & 72
9 & 24
9 & 72
12 & 72
18 & 72
24 & 72
36 & 72
72 & 72
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LCM is 72 and GCF is 6..
If you have two numbers m and n and their gcd (or gcf), g then their LCM = m*n/g so LCM = 72*252/36 = 2*252 = 504.
The LCM of all these numbers is 72. (LCM of 9, 6, 3 is 18.) (LCM of 18, 8, is 72.)
The LCM is 72.
The HCF is always a factor of the LCM of two numbers. The HCF is a factor of both the numbers which are factors of their LCM. Thus the HCF is also a factor of the LCM of the two numbers.