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What is the greatest common factor of 10, 30, and 45

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The greatest common factor (GCF) of 10, 30, and 45 is 5.

To find the GCF, you can list the factors of each number:

Factors of 10: 1, 2, 5, 10
Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 45: 1, 3, 5, 9, 15, 45

Then, you can identify the factors that all three numbers have in common. In this case, it is only the factor of 5. Therefore, the GCF is 5.
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