The span of the landlord is a bit large. I don't know this science. You don't study math. If you do, it will be much less difficult, but I have seen a girl with a big span. I know a girl who took a medical examination in biology, hehe, she got in! I suggest you consult the graduate students in your college and ask about the difficulty and the second interview. This is the most true, and you can also enroll in graduate courses in mathematics, which is easy to grasp the key points and has a supervisory role ~ believe in yourself and work hard, and you will be fine!