The sum of the digits of a number is subtracted from the number, the resulting number is always divisible by:
The correct option is B: 9
Let us assume a number 19
Sum of its digit =1+9=10
If the sum is subtracted from the given number then the result will be
so, the final result 9 is divisible by 9.
Hence, we can say that the resulting number will always divisible by 9.