What does the worst principle mean? Preparation for the civil service exam: practice at the test center and

1, the so-called most unfavorable principle, actually refers to the principle we follow when solving the pigeon hole principle problem. The pigeon hole principle is basically in contact with our primary and secondary schools, but some candidates may forget or know related topics, but they don't know that it belongs to the pigeon hole principle. The following Chinese public education experts will give you a simple and familiar example:

Example 1: How many students in a class can ensure that two students have the same constellation?

Many students should know this question, at least 13. If there are five people, then two of them may be from the same constellation or different constellations. If there are eight people, then they may all come from different constellations. So, in order to ensure this happens, you can have one person in each of the twelve constellations first, making a total of 12 people. Next, there is another person. No matter which constellation he is placed in, he can guarantee that there are two people in the same constellation. So the total * * * is1*12+1=13 people.

2. From this question, we can find that there is "at least ............................................................................................................................................................

3. The most unfavorable principle is actually the criterion for us to solve the pigeon hole principle. So why do you say that? In fact, when solving such problems, we often consider the most unfavorable and unlucky situation, and the most unlucky situation is often the one that almost succeeds.