It used to be number four, but now it's called math farmer.

Mathematics (agriculture) refers to the public basic subject mathematics in the unified agricultural examination, which refers to 3 14- mathematics (agriculture). The score of mathematics (agriculture) is 150. Bibliography: Linear Algebra, edited by Wu Chuansheng, Higher Education Press. Probability theory and mathematical statistics, edited by Wu Chuansheng, Higher Education Press. Probability Theory and Mathematical Statistics, edited by Zhu Sheng of Zhejiang University, Higher Education Press.