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The Greatest Common Factor (GCF) of 30 and 70 is 10.

One way to determine the greatest common factor is to find all the factors of the numbers and compare them.

The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.

The factors of 70 are 1, 2, 5, 7, 10, 14, 35, and 70.

The common factors are 1, 2, 5, and 10. Therefore, the greatest common factor is 10.

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 30 are 2, 3, and 5.

The prime factors of 70 are 2, 5, and 7.

The prime factors in common are 2 and 5, so the greatest common factor is 2 x 5 = 10.
The factors of 30 are:

1, 2, 3, 5, 6, 10, 15, 30

The factors of 70 are:

1, 2, 5, 7, 10, 14, 35, 70

The common factors are:

1, 2, 5, 10

The Greatest Common Factor (GCF) is:

10

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7y ago

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More answers

GCF for 30 and 70 is 10.

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15y ago
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10

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Wiki User

16y ago
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It is: 10

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7y ago
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Q: What is the greatest common factor of 70 and 30?
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