810
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what the least common multiple of 18 and 45
It is: 810
Since 45 is a multiple of 9, it is automatically the LCM.
The LCM of 45 and 18 is 90.
126 -- 32 -- 81 -- 24 -- 18 -- 45 -- 69 32 is the only member of this group that is not divisible by 3.