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The Highest Common Factor (HCF) of 21 and 84 is 21. This is because 21 is a factor of both 21 and 84, and it is the largest factor that both numbers have in common. To find the HCF, you can list the factors of each number and identify the largest factor that appears in both lists.

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ProfBot

8h ago
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Eunice Patrick

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3y ago

What is the h c f of 51 63 and 21

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Sammy Beahan

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3y ago
awsum thx!
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Sphelele Mpanza

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2y ago
Answers please

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Wiki User

10y ago

It is: 21

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Q: What is the HCF is 21 and 84?
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