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Subjects>Math>Math & Arithmetic

What is the greatest common factor for 42 and 21?

Updated: 10/17/2024

Wiki User

∙ 14y ago

Best Answer

21 itself is the greatest common integral factor, since 21 X 2 = 42.

Wiki User

∙ 14y ago

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Continue Learning about Math & Arithmetic

What is the greatest common factor of 21 28 42?

The GCF is 7.

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If that's 42, 63 and 84, the GCF is 21.

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42 prime factors -----> 2,3,7 105 prime factors -----> 3,5,7 There is 3 and 7 in common : There fore 3*7 = 21; 21 is the greatest common factor.

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The Greatest Common Factor (GCF) is: 6

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What are the common factors and greatest common factor of 21 and 42?

The common factors of 21 and 42 are 3, 7 and 21. The greatest common factor (GCF) is 21.

What is the greatest common factor 21 and 42?

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7 is the greatest common factor of 4942 and 21, or of 49, 42 and 21, if that is what you meant.

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