Question

What is the divisiblity rule of 11 ?​

Answer 1

The sum of the even digits is subtracted from the sum of the odd digits. The result is either 0 or 11,if so the number is divisible by 11. Both the numbers can be divided by 11.

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Answer 2

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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.