The national college students' mathematics competition examination time is at the end of March or April, 2024. The preliminary contest of the 15th National College Mathematics Competition will be held at 9: 00 am-11on Saturday, 2023, and the final contest will be held at the end of March or April, 2024. The 15th National College Students' Mathematics Competition is divided into mathematics majors and non-mathematics majors, and students majoring in mathematics can only apply for mathematics majors. Non-mathematics majors are not limited to the types of applications. Preliminary content: advanced mathematics. Final exam content: advanced mathematics and linear algebra (accounting for about 80% and 20% of the total score respectively). The National Undergraduate Mathematics Competition began in 2009, and the first competition was hosted by chinese mathematical society and undertaken by National University of Defense Technology. Since then, the national competition has been held once a year, which is generally hosted by different universities every year.