Um ... . It may not count if you are in the school of mathematics, but if you are in the school of finance, you must be interdisciplinary. . . However, if the coding is correct, financial mathematics should be a major at the beginning of economics 02, and the number should be a major at the beginning of science 07. . . Then you will know how the target school is set up.
Yes, every school has different books to read. It depends on the school's postgraduate enrollment catalogue and professional bibliography. Generally speaking, these will not change much every year.