Question #9d2ef

1 Answer
Gerardina C.
Oct 28, 2017

LCM is 60

Explanation:

We get three sets, the elements of the first one are multiples of 4, the second one contains multiples of 5, the third one contains multiples of 6, but the sets have sometimes common multiples: 20 and 40 are common multiples between the first and the second ones...
In the common part there will be 60, 120, ... but the least one is 60, that is the LCM(4,5,6)
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