jeanelldias2006 jeanelldias2006

01-07-2020
Mathematics

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what is the divisibility of 11 ?

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CrazyMoosen CrazyMoosen

01-07-2020

Answer:

Take the alternating sum of the digits in the number, read from left to right. If that is divisible by 11, so is the original number. So, for instance, 2728 has alternating sum of digits 2 – 7 + 2 – 8 = -11.

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