Generally speaking, people who don't have such scores will only get one, two, three and four in the postgraduate entrance examination, and the difference between them is only because of the different emphasis. Number one is synthesis, number two does not include probability theory, number three and number four are just different proportions of higher mathematics and linear generation probability. Advanced mathematics is only a part of mathematics, and the number 1234 includes advanced mathematics. Mathematics as a whole includes three parts: one is existential algebra, and the other is probability and statistics theory. Math 1234 has only a few chapters, some of which have been tested and some have not. You should be a junior college student or a postgraduate student who doesn't take math exams. The number 1234 is all based on the same textbook at the undergraduate study stage.