If the digits represented by A and B satisfy the following subtraction problem, what is the nonnegative difference of the digits represented by A and B?
+23246 If, in the left-hand column, you subract B from A and not get a remainder, B must be just 1
smaller than A.
Since there is no remainder in the 4's column, there must have been a "borrow" in the 1's
column, resulting in the A of the 4's column becoming reduced to the value of B.
A is one greater than B.
