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Some of these are prime numbers: 2, 3, 5 and 7. They have only one common factor, which is 1. Six (6) = 2 x 3, which is already present in the list of numbers. Four (4) = 2 x 2, so there is one additional 2, which needs to be multiplied. The Least Common Multiple is 2 x 2 x 3 x 5 x 7 = 420.

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Q: What is the least common multiples of 1 and 2 and 3 and 4 and 5 and 6 and 7?
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Related questions

What are all the least common multiples of 6?

a least common multiple has to be between 2 numbers, not just 1.


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