Question

If a 3-digit number 'abc' is divisible by 11, then _____ .

• A. a+b+c is a multiple of 11
• B. a+b-c is a multiple of 11
• C. a-b+c is a multiple of 11
• D. a-b-c is a multiple of 11

Answer 1

The correct option is C a-b+c is a multiple of 11

If the difference of the sum of its digits at odd places and sum of its digits at even places is either $0$ or a number divisible by $11$.

Hence, C will be correct.