Question

the difference between a 2 digit number and the number obtained by interchanging it's digit is 63.what is the difference between the digits of the number

Answer 1

Let the tens place digit be x and units place digit be y

so the number is 10x+y

By the condition given in your question

(10x+y)-(10y+x)=63

10x+y-10y-x=63

9x-9y=63

x-y=7

so the difference between the digits of number is 7