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The GCF of 9 and 25 is 1.

The factors of 9 are 1, 3, and 9

The factors of 25 are 1, 5, and 25

The GCF 9 of and 25 is 1

Factors of 9: 1 3 9

Factors of 25: 1 5 25

The GCF 9 of and 25 is 1

1

9 has no factors apart from 1, 3 and 9.

3 and 9 are not factors of 25; this only leaves 1.

Read more: http://wiki.answers.com/What_is_the_greatest_common_factor_of_9_and_25#ixzz168srO9zg

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βˆ™ 7y ago
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βˆ™ 11y ago

The G in GCF stands for greatest.

Greatest is a superlative and that means there can only be one, so you do not have "are" in the question.

Getting back to the question, 9 and 25 are coprime so GCF = 1.

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βˆ™ 13y ago

1

There is no 3 in 25 and there is no 5 in 9. Since 1 is not a Prime number, but a unity, there are no common prime factors. Still, 1 is a factor of both numbers.

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βˆ™ 10y ago

Just 1.

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Q: What is the greatest common factors of 9 and 25?
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