First of all, advanced mathematics (geosciences) does not refer to a specific math exam, but to show that the reference books it specifies are suitable for candidates majoring in geosciences. Because there are different versions of advanced mathematics books, different versions focus on different disciplines, some are suitable for candidates majoring in geosciences, and some are suitable for candidates majoring in physics. Generally speaking, it is enough for students majoring in geosciences to learn advanced mathematics from Tongji Fifth Edition.

Secondly, the high number A is a kind of mathematics test for the independent proposition of the colleges you apply for, such as Chinese Academy of Sciences, Chinese University of Science and Technology, and Nantah. Some professional independent propositions do not belong to the national unified examination, and the national unified examination only has mathematics 1234. Since it is an independent proposition, the scope of test sites in different universities is also different. Go and look at the admissions brochure of the university you applied for. There will be a detailed description of the scope of the test center, which is also the most authoritative. At present, the 10 brochure has definitely not come out. Just look at 2009, there won't be much difference.

Compared with Math 3, Math 3 has to take calculus, linear algebra, probability theory and mathematical statistics, with a wide range. Mathematics a may only take calculus (the same is true of Chinese Academy of Sciences), but of course it is subject to the examination chapter. As for which is difficult, it's hard to say. It's not necessarily difficult to take a wide test, and it's not necessarily easy to take a small test, is it?