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What number is a common multiple of 21 and 30?

Updated: 8/20/2019
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12y ago

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210

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12y ago
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Q: What number is a common multiple of 21 and 30?
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What are the lowest common multiples of 21 and 30?

The Least Common Multiple of 21 and 30 is 210.


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The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The least multiple of a number is itself.


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The least common multiple of the numbers 21 and 30 is 210.


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Since one number ends in a zero, your least common multiple must also end in one. 21 x 10=210 and 30 x 7=210It is: 210


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