Question

the sum of the number is subtracted from the number. The resulting number is always divisible by? ​

Answer 1

Answer:

Step-by-step explanation:

Let the digits are x and y

so No is 10x+y

now number-sum of digits

=10x+y-(x+y)

=9x

this difference always divisible by 9

Check:

21-3=18

37-10=27

85-13=72

92-11=81