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The greatest common factor of 30, 45, 60, and 75 is 15. The GCF can't be greater than the difference between any of the two numbers in the set. The difference between each consecutive number in the set is 15, and it's easy to see that 15 is a factor of each integer.

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8y ago
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8y ago

The GCF is 15.

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Q: What is the greatest common factor of 30 45 60 and 75?
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