Question

the sum of digits of a number is subtracted from the number the resulting number is always divisible by​

Answer 1

Answer:

9

Step-by-step explanation:

Let the number be xy , that is 10x+y .

Given, Sum of digits = x + y.

Question : The sum of digits of a number is subtracted from a number, the resulting number is always divisible by.

Number - Sum of digits

10x + y - x - y

= 9x

So , 9x has factors 9 & x. Therefore, 9x is always divisible by 9 . The sum of the digits of a number is subtracted from a number , the resulting number is always divisible by 9.