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What is the HCF of 20 and 12?

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Anonymous

∙ 13y ago
Updated: 8/19/2019

To work this out, you need to write both numbers as their prime factors:

20 = 2x2x5

12 = 2x2x3

The next step is to identify any common prime factors. In this case both numbers have two 2s as prime factors. Multiply these together and you get 4. Therefore 4 is the HCF of 20 and 12.

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Wiki User

∙ 13y ago
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