Question 28
If the answer is not an integer, give the nearest integer. If the calculated answer has more than five digits, give its last five digits.
The numbers $\overline{AB},\overline{CD},\overline{EF},\overline{GH},\overline{IJ}$ are two-digit numbers, and different letters represent different digits. What is the maximum possible value of $\overline{AB}-\overline{CD}+\overline{EF}-\overline{GH}+\overline{IJ}$?
The numbers $\overline{AB},\overline{CD},\overline{EF},\overline{GH},\overline{IJ}$ are two-digit numbers, and different letters represent different digits. What is the maximum possible value of $\overline{AB}-\overline{CD}+\overline{EF}-\overline{GH}+\overline{IJ}$?