1.

Which of the following numbers is divisible by 11?(A) 1011011 (B) 1111111 (C) 22222222 (D) 3333333

Answer»

(C) 22222222

To check the divisibility of a number by 11, the rule is, find the difference between the sum of the digits at odd places (from the right) and the sum of the digits at even places (from the right) of the number. If the difference is either 0 or divisible by 11, then the number is divisible by 11.

So, 2 – 2 + 2 – 2 + 2 – 2 + 2 – 2 = 0

Therefore, 22222222 is divisible by 11.



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