Wu Xiaozheng finally saw the metamorphosis of the Olympiad competition.

The test paper of the competition is deceptively simple.

There are only 8 fill-in-the-blank questions and 3 short-answer questions in the whole set of test papers, of which each fill-in-the-blank question is worth 8 points, the first short-answer question is worth 16 points, and the remaining two questions are 20 points each, for a total of 120 points.

This doesn't seem like a lot of work.

There seems to be plenty of time to answer the questions, from 8 a.m. to 9:20 a.m., a full 80 minutes.

But the first question stumped Wu Xiaozheng.

Now 7 students are arranged to participate in 5 sports, and students A and B are required not to participate in the same project, and each event has people to participate, and each person only participates in one project, so what are the different arrangements that meet the above requirements?

As soon as he saw the title, Wu Xiaozheng was stunned for a while.

This is where the Olympiad is very logical.

Don't look at it as just a fill-in-the-blank question.

But in order to make this question, you must first consider that there are two possibilities for the entry scheme, one is that one of the projects has three participants, and the other is that two of the projects have two participants, and then start to use professional knowledge to count the number of participants in each possible way.

When calculating, it is necessary to exclude the situation that students A and B participate at the same time.

Such fill-in-the-blank questions, if put into the college entrance examination, can be used as the most difficult simple questions.

And this is just the easiest fill-in-the-blank question, and the next one is more difficult than the other.

Fortunately, Wu Xiaozheng has mastered the mathematical knowledge of the second and third years of high school, and basically knows the answering method of this question.

It took him a while to figure out 15,000 possible answers.

Thankfully, there will finally be no zero points!

Wu Xiaozheng began to be patient and did the following questions.

In fact, it is basically impossible to get a zero score, because he has already mastered all the knowledge points of high school mathematics.

Relatively speaking, most of the questions can still be solved if you have a comprehensive grasp of junior and senior high school mathematics knowledge and strong logical thinking ability.

It's just more time-consuming.

But even so, there was still a fill-in-the-blank question and the last short-answer question that stumped Wu Xiaozheng.

And there is not enough time to answer the questions.

And the main reason is that Wu Xiaozheng still does too little for similar question types.

After leaving the examination room, Wu Xiaozheng saw that the other three students in the class, including Liu Zhilan, were crying and sad, and they did not do well in the exam.

"Wake up, it's normal to not get well in the exam, such a competition, for us who have just accepted the high school math Olympiad, is playing soy sauce, don't expect to get good results!" Wu Xiaozheng smiled and comforted.

This era is not like the next generation.

In later generations, the dolls are tired when they go to school, and the Olympiad thinking is directly cultivated from elementary school.

Even if the dolls are tired and complaining, parents still pay a high price to send their children to Olympiad interest classes.

Of course, that is also beneficial, at least the children at that time, the foundation of mathematics is generally much better than that of today's students, and it is normal to get good results in the first year of high school when they participate in the Olympiad competition.

Liu Zhilan was still a little unwilling.

She asked, "How many points do you think you'll get?"

"About sixty or seventy points. ”

Wu Xiaozheng did better than he expected.

With the exception of the last short-answer question and a fill-in-the-blank question, he was quite sure of everything else.

"Isn't it? I think I'd be pretty good if I could get fifty points!"

Liu Zhilan couldn't believe it.

Mathematics has always been a subject she is proud of, and she has participated in Mathematics Olympiad training and competitions since junior high school.

She originally thought that she would be able to be a little better than Wu Xiao in the Olympiad competition, but who knew that she couldn't compare this time, which made her very frustrated.

Wu Xiaozheng felt that this was normal.

He knows why.

The reason why he did better than Zhong Xiaolan in the exam is that he has a more comprehensive knowledge of high school mathematics, and although Liu Zhilan has a foundation in Olympiad mathematics, it is limited to the knowledge points of junior high school, and she has just begun to learn high school mathematics knowledge.

If she wants to get good grades, it will be at least next year, and that is when she spends a lot of time studying high school math ahead of schedule.

On top of that, you have to do a lot of practice.

"You know why I gave up this competition, right? Because the questions are too perverted! It is said that the questions of the semi-finals are even more perverted, and they will be completely beyond the scope of high school math knowledge. ”

Liu Zhilan understood what Wu Xiaozheng meant.

For the sake of an illusory ranking and honor, it is simply not necessary to spend a lot of time learning knowledge that is not very useful for future careers.

This also gave her the idea of quitting the study group of the Olympiad competition.

In recent days, she has found the joy of learning computer knowledge, and she has made great progress, and even Teacher Zhong praised her, saying that she only needs to work harder to hope for the fast class.

It seems to verify Wu Xiaozheng's guess.

Yan Zhanpeng walked over, and after seeing a few people with depressed faces, he began to comfort everyone: "It's okay, this competition is to let everyone experience the difficulty of the competition and let everyone know what to learn next." ”

When he said this, everyone's frustration was much better.

Yan Zhanpeng turned his attention to Wu Xiaozheng, who looked indifferent: "How did you do in the exam?"

"It's ok. Wu Xiaozheng replied perfunctorily.

But Yan Zhanpeng didn't want to let him go easily, and asked, "How many points can you get?"

"About sixty or seventy points. Wu Xiaozheng replied conservatively.

"So many?" Yan Zhanpeng asked incredulously.

That's more?

Wu Xiaozheng immediately felt that trouble was coming again.

You know, the sixty or seventy points he said are conservative.

He did the math himself, except for a fill-in-the-blank question that he was not sure of, and the last short-answer question was not completed and he did not get the correct answer, everything else was still relatively sure.

As for the last simple question, his main answering steps have been completed, and it is conservatively estimated that it should be no problem to get half of the points.

If you do this calculation, it is very likely to get more than 80 points.

He immediately asked curiously: "What is the level of 70 points?"

Yan Zhanpeng replied: "According to the experience of previous competitions, if you can score more than 70 points in the city competition, you can basically hope to enter the provincial competition, and if you can score more than 85 points in the city competition, you are also expected to win the ranking in the provincial competition." ”

Wu Xiaozheng: "......"

Trouble!

It seems that I still don't know enough about this competition, and I even tried my best to answer the questions.

In this way, there may be a real hope of making it to the finals.

But is this what Wu Xiaozheng wants?

No!

He had read the outline of the competition.

In the preliminary round of the provincial competition, the syllabus stipulates that all the knowledge points of the test are the content of high school mathematics, but when it comes to the semi-finals, the knowledge points tested far exceed high school mathematics, including the drawer principle, the principle of repulsion, the extreme principle, Menelaus's theorem, Ptolemy's theorem and a series of concepts that he has never heard of.

If you go to the semi-finals again, won't you let yourself find abuse!

Wu Xiaozheng is keenly aware that trouble may be coming again.