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What is the greatest common factor of 21 35 and 81?

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Anonymous

∙ 9y ago
Updated: 10/17/2024

The GCF of 21, 35, and 81 is 1.

The prime factorization of 21 is 3*7

The prime factorization of 35 is 5*7

The prime factorization of 81 is 3*3*3*3

So they have no common factor other than 1, which is the GCF.

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∙ 9y ago
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