Correct Answer - Option 1 : 4
Given:
The difference between a two digit number and the number obtained by interchanging the positions of its digits is 36
Calculation :
Let the number is 10x + y
By interchanging the digits it become = 10y + x
⇒ 10x + y - (10y + x) = 36
⇒ 9x - 9y = 36
⇒ x - y = 4
∴ The difference between the digits is 4.