Question

disability rule by 11

Answer 1

A number is divisible by 11, if the difference between the sum of its digit at odd places and the sum of its digit at even places, is either 0 or a number divisible by 11.

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Answer 2

Divisiblity rule of 11

1. Take the alternating sum of digits of the given number.

2. if it is divisible by 11, then the number is divisible by 11.

eg: 2728 (2-7) + (2-8) = -11. It is divisible by 11. So the number is divisible by 11.