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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?​

Respuesta :

Answer:

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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