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What is the least common factor of 12 and 21?

Anonymous

∙ 8y ago

Updated: 8/17/2019

The factors of 12 are 1, 2, 3, 4, 6, and 12.

The factors of 21 are 1, 3, 7, and 21.

The common factors are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1.

Wiki User

∙ 8y ago

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