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You must start with two numbers in order to find the greatest common factor of a set of numbers. The number 25 alone has no greatest common factor as their is no other number in order to have a factor in common with anything.

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14y ago
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13y ago

The factors of 25 are: 1, 5, 25

The factors of 75 are: 1, 3, 5, 15, 25, 75

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11y ago

1, 5, 25

1, 3, 5, 15, 25, 75

The GCF is 25.

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8y ago

Since 25 is a factor of 75, it is automatically the GCF.

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8y ago

You need at least two numbers to find a GCF.

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8y ago

1 only has one factor, it doesn't have a tree. You can save time and effort by remembering that 1 is the GCF of any pair of numbers that includes 1.

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8y ago

25

5,5

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8y ago

It is: 5

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Q: What is the GCF of 25 out of 75?
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