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The factors of 18 are:

1, 2, 3, 6, 9, 18

The factors of 20 are:

1, 2, 4, 5, 10, 20

The common factors are: 1, 2

The Greatest Common Factor (GCF) is: 2

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13y ago
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Q: What is the highest common factor of eighteen and twenty?
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