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The rules of divisibility tell you that 40 is divisible by 1, 2, 4 and 5. Dividing 40 by those numbers gives you 40, 20, 10 and 8. Writing them together gives you the factor pairs of 40.

(40,1)(20,2)(10,4)(8,5)

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11y ago
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11y ago

Divide 40 by 1, 2, 4 and 5.

(40,1)(20,2)(10,4)(8,5)

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Q: How To Find all the factor pairs of 40?
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