The knowledge points of probability statistics can be summarized as: 1. It is very meaningful to understand the regularity and probability of random events. 2. In order to understand the significance of the probability of equal possibility events, we will use the basic formula of permutation and combination to calculate the probability of some equal possibility events. 3. In order to understand the meaning of mutually exclusive events and independent events, we will use mutually exclusive events's probability addition formula and independent event probability multiplication formula to calculate the probability of some events. 4. Calculate the probability of the event happening k times in n independent repeated tests.

Math:

Mathematics is a subject that studies concepts such as quantity, structure, change, space and information. Mathematics is a universal means for human beings to strictly describe the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. In this sense, mathematics belongs to formal science, not natural science. Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics.