If you choose to continue your studies, this scientific mathematics is really great, because it is all about mathematical problems.

Question 1, 2,3: The specific direction is hard to say. For undergraduates who like graduate tutors very much, they can choose business majors such as economics and finance, and other engineering majors such as communication and electronics. And can continue the research of basic mathematics subjects. If you want to be a graduate student in finance, I suggest you study mathematics and applied mathematics.

Information management and information system, which involves computers, is an interdisciplinary subject. It's not that you can't learn. After graduation, I will compare with well-known peers such as SAP and IBM, many of whom study computer and software.

The fifth question, indeed. You don't have to worry too much about your major. You can also study other professional courses. Don't discipline yourself with professionalism.

The sixth question, regardless of interest, do you plan to graduate for further study? I suggest math and applied math. If you plan to find a job directly, all these can be done, but you need to make up some computer knowledge, because you rarely bring theoretical knowledge of mathematics when recruiting, and you should examine your programming ability in R&D positions. Just make it up.

I hope I can help you. If you don't understand, please keep asking questions.