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Common Multiples are multiples which are common to both numbers

So Multiples of 9 are 9, 18, 27, 36 etc...

Multiples of 27 are 27, 54, 81 etc...

you can work out the least common multiple as 27

We can see that 9 is a factor of 27 so all multiples of 27 are a common multiple with 9.

But as there is no upper limit we can not work out a greatest common multiple as they bigger they get the closer they get to infinity!

You tend to work out Greatest Common Factor and Least Common Multiple with regards numbers.

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โˆ™ 2009-03-19 00:14:43
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Q: What is the greatest common multiple of 9 and 27?
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