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To find the HCF of two numbers you first need to identify their prime factors. In this case we have:

11 = 11

9 = 3x3

The next step would be to identify any common prime factors. In this case there are none. Thus the hcf of 11 and 9 is simply 1.

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βˆ™ 12y ago
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βˆ™ 9y ago

The GCF is 1.

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βˆ™ 14y ago

1

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Q: What is the HCF of 11 and 9?
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