$5 、$ In a certain examination room of the "Zhonghuan Cup", there are a total of 45 students, among whom 35 are good at English, 31 are good at Chinese, and 24 are good at both subjects. How many students are not good at either subject? $\qquad$ people
【Answer】3
Analysis: $45-(35+31-24)=45-42=3$ people