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Start with the factors of 99:

99 = 33 X 3 = 11 X 3 X 3.

So {1, 3, 9, 11, 33, 99} are the factors of 99.

Next find the factors for 66:

66 = 11 X 6 = 11 X 3 X 2.

So {1, 2, 3, 6, 11, 22, 33, 66} are the factors of 66.

Next find the common numbers of these two sets:

{1, 3, 11, 33}.

Since 33 is the largest of these numbers, it is the greatest common factor.

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14y ago

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More answers

At least two numbers are required to give a common factor.

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9y ago
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The GCF is 33.

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Wiki User

9y ago
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It is 33.

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7y ago
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Q: What is the greatest common factor of 33 66 and 99?
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