If it is a high number, the high number in the university is divided into high number A, high number B, high number C and high number D, and high number A is the most difficult, even for science students, it will be a bit difficult to learn; The high number D is the simplest, and liberal arts students can also learn it. If you mean college mathematics as a math major, it's really difficult.

Band 4 is quite simple, and the difficulty of Band 4 is actually the difficulty of high school English. Both liberal arts students and science students can cope.

Generally speaking, college mathematics is more difficult to learn.