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To find this, you need to split the numbers into their prime factors:

45 = 3x3x5

27 = 3x3x3

The next step is to identify any common prime factors. In this case, both numbers have two 3s as prime factors. Multiply these together and you get 9. Thus the HCF of 45 and 27 is 9.

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โˆ™ 2012-02-25 23:10:01
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Q: What is the HCF of 45 and 27?
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