10. (10 points) In a math test at Sheep Village Elementary School's fourth grade, the test consists of 15 questions. If Xiaoxixi, Xiaobeibe, Xiaomeimei, and Xiaolan all answered 11, 12, 13, and 14 questions correctly, respectively, then the minimum number of questions they all answered correctly is $\qquad$ questions.
【Answer】Solution: The four people got 4, 3, 2, and 1 questions wrong, respectively. The total number of questions they got wrong is: $4+3+2+1=10$ (questions). If the questions that each of the four people got wrong are all different, then the number of questions they all got right is the least. Therefore, the minimum number of questions that all four people got right is: $15-10=5$ (questions). Answer: The minimum number of questions that all four people got right is 5. Therefore, the answer is: 5.