2. According to the different requirements of each major for graduate students' mathematical ability, the postgraduate entrance examination papers are divided into Mathematics I, Mathematics II and Mathematics III. The similarities are written test, closed paper, full mark 150 and examination time 180 minutes, but the differences are the breadth and depth of the questions.

3. Mathematics 1 includes advanced mathematics (about 60%), linear algebra (about 20%) and probability theory and mathematical statistics (about 20%). Mainly suitable for master of engineering, the breadth and depth of the topic is the largest. The question type of the test paper is 10 multiple-choice question, with 5 points ***50 points for each question; Fill in 6 questions, each with 5 points and * * * 30 points; Answer 7 questions, each question is 10, ***70, out of 150.

4. Mathematics II includes advanced mathematics (about 80%) and linear algebra (about 20%), which is mainly suitable for engineering majors with moderate breadth and depth. The question type of the test paper is 10 multiple-choice question, with 5 points ***50 points for each question; Fill in 6 questions, each with 5 points and * * * 30 points; Answer 7 questions, each question is 10, ***70, out of 150.

5. Mathematics III includes advanced mathematics (about 60%), linear algebra (about 20%) and probability theory and mathematical statistics (about 20%). Mainly applicable to economics and management, with the smallest breadth and depth. The question type of the test paper is 10 multiple-choice question, with 5 points ***50 points for each question; Fill in 6 questions, each with 5 points and * * * 30 points; Answer 6 questions, 1 question 10, 5 questions 12, ***70, full mark 150.

Although the three are different in difficulty, it is not easy for students of all majors to get high marks. According to the average score of mathematics published by the Ministry of Education over the years, the average of the three is around 70, as shown in the following figure. However, due to different difficulties, the number of high-level students in Math III is obviously higher than that in Math I. ..