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?
Choose the correct choice from the following options.
A) 2  B) 3  C) four  D) 8  E) 9
Solution   Let the ten's digit be x and units digit be y.   Then, (10x+y) - (10y+x)= 36	‹=›9(x - y) = 36   ‹=›x - y = 4.   Answer four
<result>C</result>
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?