In mathematics and data analysis, there are not many problems that can be worked out without writing, but they do exist, but we must have appropriate ideas and methods to solve them. As long as there is a knowledge reserve in these areas, many problems can be worked out by mouth.

The topic of data analysis is suggested to be done in the exam, because many questions don't need accurate calculation, just estimate and you can get the answer. Data analysis focuses on a person's ability to discover and mine effective information, which is relatively easy for a liberal arts student.