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Both can be divided by 3

72 / 3 = 24

45 / 3 = 15

and divided by 9 as well

8 x 9 = 72

5 x 9 = 45

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11y ago

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More answers

1, 3, and 9

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12y ago
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1, 3, 9

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Wiki User

12y ago
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Q: What is the common factor of 45 and 72?
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