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The factors of 308 are:

1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308

The factors of 420 are:

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

The common factors are:

1, 2, 4, 7, 14, 28

The Greatest Common Factor:

GCF = 28

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7y ago
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7y ago

The answer is 28.

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Q: What is the GCF of 308 and 420?
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