Question #51c21
1 Answer
60
Explanation:
The lowest common multiple is the lowest number which has all of these numbers as factors. Looking at the individual factors...
In order to find a multiple of
Now, we have (2, 2, 3, 5). This set of factors contains both the factors of 5 and the factors of 6.
You might ask why we can't simply remove one of the 2s in our set of factors. If we removed one of them, then we would have (2,3,5), but 20 needs (2,2,5); we would be missing a necessary 2 from our factor list, and thus we cannot remove the 2 i nquestion.