Question

write the divisibility rule by 11 with one example​

Answer 1

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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Answer 2

Answer:

121

Step-by-step explanation:

the divisibility rule is that, you take the sum of the odd numbered places, for eg here, it is 1+1 which is 2; then you take the sum of the even numbered places for eg here it is only 2. Then you subtract the sum of even places from the odd places, in this case 2 - 2 which is equal to zero. Note that the difference must be either 0 or 11 for it to be divisible.

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