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There is really so such thing as a "greatest common multiple." Once you find the least common multiple of a set of numbers, you can keep adding the LCM to itself over and over again. Each new number you get will be a common multiple of your set of numbers, but each new number will always be larger than the previous. This means that you can keep adding while the number approaches infinity and you will still never find a greatest multiple.

The first few common multiples of 4 and 5 are: 20, 40, 60, 80, and 100.

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Q: What is the greatest common multiple of 4 and 5?
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What is the greatest common multiple of 4 5 and 3?

There is NO greatest common multiple. Suppose x is the greatest common multiple. Then, it is easy to show that 2x will be a common multiple and 2x > x so x cannot be the greatest.


What is the GCM of 5 and 1?

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What is the greatest common multiple of 5 and 6?

There is no greatest common multiple: for whatever value you say is the greatest I can always add their lowest common multiple and get an even greater common multiple.There is a greatest common FACTOR and a LOWEST common multiple:gcf(5, 6) = 1lcm(5, 6) = 30


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The greatest common multiple of any set of integers is infinite.


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What is the lowest common multiple of 4 5 and 9?

The greatest common denominator of any set of denominators is infinite.


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The greatest common multiple is an infinite amount and not very practical for problem solving.


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What is the greatest common multiple 25 and 30?

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