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25 June, 01:53

28. A number has 4 and 5 as factors. What other numbers must be factors? Why? What is the smallest number

this number could be?

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  1. 25 June, 01:58
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    2, 10.

    Smallest number = 20.

    Step-by-step explanation:

    It must have 2 as a factor because 4 is a factor, and 2 is a factor of 4.

    Also 4 * 5 = 20 so 10 must be a factor.

    The smallest number possible is 20.
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