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The GCF of 30 and 75 is 15

In order to find the HCF of 30 and 75 you must first express them as the product of their prime factors:

30 = 2x3x5

75 = 3x5x5

The next step is to identify any common factors. In this case both numbers have a 3 and a 5 as factors. Multiply these together to find the HCF:

3x5 = 15

Thus the greatest common factor of 30 and 75 is 15.

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7y ago

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