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Common factors are any numbers that are factors of each. The greatest common factor therefore is the largest number that appears in both lists.

Factors of 52

1, 2, 4, 13, 26, 52

Factors of 84

1, 2, 3, 4, 6, 7, 12, 14, 28, 42, 84

Common factors would be - 4, 2, and 1

Therefore the greatest common factor is 4.

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16y ago

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