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?	Options:	A) 3	B) 4	C) 5	D) 6	E) 9
Let the ten's digit be x and unit's digit be y.   Then, (10x + y) - (10y + x) = 36   9(x - y) = 36   x - y = 4.   Answer: Option 4
<result>B</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?