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The LCM of 10 and 30 is 30. Because 30 is a multiple of 10, it is the LCM of the set.

In addition, you can find the LCM by dividing the product of the pair of numbers by their GCF.

The product of 10 and 30 is 300.

The GCF of 10 and 30 is 10. (Because 10 is a factor of 30, it is automatically the GCF of the pair.)

So the LCM of 10 and 30 is 300/10 = 30.

You can also find the LCM by listing the multiples of each number and identifying the lowest one that is found in both lists:

Multiples of 10 are 10, 20, 30, 40, and so on.

Multiples of 30 are 30, 60, 90, and so on.

So the LCM is 30.

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Q: What is the least common multiple of 10 and 30?

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