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23-04-2017
Mathematics

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By what rule can I identify numbers that can be divided by nine without rest? 765 is dividable by 9, and so is 123456789. How can I "see" that?

Respuesta :

23-04-2017

If you add the digits and it divides by 9 then it divides for that number

Like 765 is 7+6+5=18 since 18/9=2 then 765 divides by 9

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