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To find the greatest common factor (GCF) of 15, 35, and 45, we first need to factorize each number. The factors of 15 are 1, 3, 5, and 15. The factors of 35 are 1, 5, 7, and 35. The factors of 45 are 1, 3, 5, 9, 15, and 45. The greatest common factor among these three numbers is 5, as it is the largest factor they all share.

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The GCF of 15, 35, and 45 is 5.
Five.

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Wiki User

9y ago
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The GCF is 5.

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Wiki User

10y ago
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Q: What is the greatest common factor of 15 35 and 45?
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