What is the divisibility of 11 ?

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asked Sep 25, 2021 42.4k views

1 Answer

Peitek · Answer 1 · 2021-10-01T06:58:16+0000

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.

What is the divisibility of 11 ?

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What is the divisibility of 11 ?