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What is the HCF of 21 and 49?

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Anonymous

∙ 13y ago
Updated: 11/5/2024

The first step when finding an HCF is to break the numbers down into their prime factors. In this case we get:

21 = 3x7

49 = 7x7

The next step is to identify any common prime factors. In this case both numbers have a 7 as a prime factor. There are no more common prime factors, and thus the HCF of 21 and 49 is 7.

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∙ 13y ago
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The GCF is 7.


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What is the hcf for 21 and 49?

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