The difference between a two-digit number and the number after interchanging the position of the two digits is 72. What is the difference between the two digits of the number?	Choose the correct choice from the following answers.
A) 4
B) 6
C) 3
D) Cannot be determined
E) None of these
Let the two-digit no. be l0x + y.   Then, (10x + y) â€“ (10y + x) = 72   or, 9(x â€“ y) = 72   Answer None of these
<result>E</result>
The difference between a two-digit number and the number after interchanging the position of the two digits is 72. What is the difference between the two digits of the number?