14. (6 points) The average of six numbers is 24, and the average after adding one more number is 25, the number added is
14. (6 points) The average of six numbers is 24, and the average after adding one more number is 25. The number added is $\qquad$.

【Solution】Solution: $25 \times 7-24 \times 6$,
$$
\begin{array}{l}
=175-144, \\
=31,
\end{array}
$$

Answer: The number added is 31.
Therefore, the answer is: 31.