1. To solve the problem of series, we need to be familiar with the properties of arithmetic progression and geometric progression, because these two basic series are the "cases" of most series types, and many seemingly complicated series problems cannot be separated from them.

2. For small ones, such as elutriation and glume selection, arithmetic progression and geometric series are mainly investigated. It can be seen that learning from arithmetic progression and geometric progression is the key and key point to solve the series problem. No matter how difficult the series of questions is, we should not be afraid of them.

3. In the later comprehensive examination, there is a particularly important method, which is the incomplete acceptance method. To discuss whether a sequence has some regular properties, we can gradually discover the general laws in the problem according to the derivation process and conclusions of the previous items.

4. If we can see the law of the problem, the direction is clear, and the process of proof is no problem. Incomplete induction is actually a bold assumption based on speculation, of course, mainly from induction. Therefore, it is very useful to try to solve a series of problems.

5. If you want to master the series of questions better, you can't do without the usual practice. Practice makes perfect. Summarize more, ask more questions and practice more. I believe that everyone will not have much problem with the series.