Why did you or your friends choose the mathematics department of the university?
After graduating from senior three, I prefer the mechanical department, but I can choose four volunteers, and then I chose three, the serial number is 5 Mathematics and 7 Machinery. Then when I was filling in my volunteers, I didn't know how my brain got hot, and I filled in directly according to the serial number from small to large. Mathematics comes first, and I was admitted to the mathematics major.