The difference between a two-digit number and number obtained by interchanging the two digits is 63. What is the difference between the two digits of that number?	Choose the correct answer.
A) 29	B) 70	C) 92	D) 8	E) 7
Let the ten’s digit be x and unit’s digit be y   (10x+y)-(10y+x)=63   9(x-y)=63   x-y=7   Option 7
<result>E</result>
The difference between a two-digit number and number obtained by interchanging the two digits is 63. What is the difference between the two digits of that number?