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The factors of 20 are 1, 2, 4, 5, 10 and 20. The factors of 30 are 1, 2, 3, 5, 6, 10, 15 and 30. Therefore their common factors are 1, 2, 5 and 10.

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12y ago
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Wiki User

13y ago

1,2,5,10

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Q: What are the common factors for 20 and 30?
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