haniak123 haniak123

26-08-2020
Mathematics

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what is the divisibility rule for 11

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raskolnikov raskolnikov

26-08-2020

Answer:

Here an easy way to test for divisibility by 11. 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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