It's just the difference in content. Because the scope of the count-one test is wider than that of the count-three test, it is not recommended that you buy another book of the count-three test. Just make clear the scope of the number three test, and just skip the part that can't be tested, such as the triple integral number three. Why waste it?

In addition, the words "familiarity, mastery and mastery" in the mathematics syllabus respectively indicate where some key points and secondary points are and which ones can be passed, so you can pay attention to them.

When I was reviewing for the postgraduate entrance examination, my favorite math review book was outline analysis, which I personally thought was very good. In my opinion, it is for reference only. Wish the postgraduate entrance examination go smoothly!