# What will be the difference between two digit number?

The difference between a two digit number and the number obtained by interchanging the positions of its digits is 36. What is the different between the two digits of that number?

- 2
- 3
- 4
- 5

**Answer: (3) 4
Explanation:-**

Let be the unit digit is X and ten digit is Y

According to question, (10Y + X) – (10X – Y) = 36

9Y – 9X = 36

9(Y – X ) = 36

Y – X = 36/9

Y – X = 4

Hence, the difference between required numbers is 4.