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

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

A 2

B 3

C 4

D 5

Solution

Correct Answer: Option C

51-15 = 36 so 5-1 = 4