Math, asked by riya1249, 1 year ago

which of the following number is exactly divisible by 11

Answers

Answered by SakthiSwaroopan

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. Since -11 is divisible by 11, so is 2728.

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