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What is the least common multiple of 21 and and 28?

Anonymous

∙ 15y ago

Updated: 10/25/2022

The least common multiple is the smallest number that is multiple of two or more numbers.

21: 21, 42, 63, 84

28: 28, 56, 84

The LCM of 21 and 28 is 84.

Wiki User

∙ 8y ago

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More answers

We can obviously see that the 2 elementary numbers are divisible by 7, therefore, the LCM is 21/7 * 28/7 * 7 = 3 * 4 * 7 = 12 * 7 = 84.

Wiki User

∙ 15y ago

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.

Wiki User

∙ 8y ago

84

Wiki User

∙ 12y ago

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