The compulsory question in senior high school is a math exercise book with exercises as the main topic, which contains the main knowledge points and questions of senior high school mathematics. The difficulty of the question is moderate, suitable for practicing and consolidating knowledge points at ordinary times. The advantage of compulsory exercises in senior high school is that the number of exercises is large and the coverage is wide, which can help students master mathematics knowledge systematically and improve their problem-solving ability. In addition, the answers to the compulsory questions in senior high school are more detailed, which is convenient for students to find and correct their mistakes.

53 is a workbook with NMET mathematics as the main goal. It pays more attention to the in-depth analysis of NMET mathematics test sites and questions, and the questions are relatively difficult, which is suitable for students with a certain mathematical foundation to improve and sprint. The advantage of "53" is its high quality and moderate difficulty, which can help students to deeply understand the knowledge points of mathematics and improve their problem-solving skills and test-taking ability. In addition, on May 3rd, some simulated test questions and real questions of the college entrance examination over the years were included, which is convenient for students to review and practice in a targeted way.