Question 148
Fill in the blank to make the statement true.
If the difference between the sum of digits at odd places (from the right) and the sum of digits at even places (from the right) of a number is either 0 or divisible by ___, then the number is divisible by 11.
11
According to the divisibility test for 11, if the difference between the sum of digits at odd places and the sum of digits at even places of a number is either 0 or divisible by 11, then the number is divisible by 11.