11. (12 points) In the addition problem below, the same Chinese characters represent the same digits, different Chinese characters represent different digits, and none of them are zero. Then the minimum value of the difference between “数学解题” and “能力” is $\qquad$ .
Math Problem Solving
$$
\begin{array}{l}
\text { Ability } \\
\begin{array}{cccc}
+ & & \text { Show } & \text { Demonstrate } \\
\hline 2 & 0 & 1 & 0
\end{array} \\
\end{array}
$$
【Answer】Solution: According to the problem, we know:
First, to make the difference of the numbers as small as possible, the hundred's place of the four-digit number should be as small as possible. We can try number $=1$, learn $=8$. The sum of solution + ability + development plus the carry-over should end in 1. Considering 1 carry-over, the sum of solution + ability + development is 20. Solution should be as small as possible, and ability should be as large as possible. Therefore, solution $=4$, ability $=9$, development $=7$; the result of problem + power + indication is 10. Problem should be as small as possible, and power should be as large as possible. Problem $=3$, power $=5$, indication $=2$. Thus, $1842-95=1747$. Therefore, the answer is: 1747.