Question

5B12 is divisible by 11, find the value of B , if the number is divisible by 11

• A. 123123
• B. 34567896
• C. 2345678234
• D. None of These

Answer 1

The correct option is B

34567896

A number is divisible by 11 if the difference between the sum of its digits in even places and the sum of its digits in odd places is either 0 or 11

Given number is 5B12, we have sum of the digits in the even place is B + 2

Sum of the digit in the odd place is 5 + 1 = 6

Difference between the sum of the digit in the odd places and the sum of the digit in the even places

$\Rightarrow$ B+2 - 6

$\Rightarrow$ B - 4 = 0, 11, 22, 33, 44.............

$\Rightarrow$ B = 4, 15,26................

$\therefore$ B = 4 as B is a digit.