In fact, this is not the first time that Rococo has entered the teacher's office at Xiuquan Middle School.

However, the last time Rococo came, there was no one in the office except Fu Juan.

Luo Yanmin first put away her lesson plan, and then took Rococo to another office.

Rococo raised his hand and looked at the plaque at the door—mathematics.

When he arrived at an empty seat, Luo Yanmin stopped, looked through things by himself, and said, "Your math teacher, Mr. Tang, will not come to class this afternoon, but she said that she has something for you." ”

I finally found it, and it was like a few test papers.

A look at Rococo, the High School Math Olympiad? Then Luo Yanmin didn't care whether Luo Ke accepted it or not, just like many other teachers, he looked like he was honoring you to participate in the competition.

Before Luo Coco could say no, Luo Yanmin said that he could go, and Luo Yanmin himself quickly disappeared into the office.

"You're Rococo?"

Just when Rococo was speechlessly holding the test paper in his hand, a female teacher who Rococo didn't know, who was already a little old, also suddenly asked.

"Yes."

"I got a perfect score in the last math test, and I did well, have you ever participated in the math Olympiad before?"

"Uh...... No. ”

"Uh......"

Obviously, the female teacher was also stunned.

"It's okay, anyway, it doesn't hurt to give it a try."

Wait until the Rococo is gone......

In the math office, the discussion continued.

"The quota is so important, it was given to someone who had never participated in a math competition."

"Who let the family get a perfect score, you let the students in your class get a full score and come out and see."

"All I can say is that someone is really a walking dog. luck. ”

"Have you heard, the school leaders originally planned to transfer her away."

"According to me, it should have been transferred, you look at the students she has taught in the past few years, which time is not countdown?"

"I have a relative, and when I heard that it was from her class, I quickly called the principal and said that I wanted to change classes."

"Her teaching level is really not up to the standard in our show."

Rococo was standing outside the office door - actually, she hadn't gone far. After listening to the conversation in the math office...... Rococo also probably understands who the 'she' in the mouths of these teachers represents.

But Rococo thinks that their math teacher is very good, always smiling, and not like other teachers, who leave in a hurry after class, but always stay slowly, asking everyone if they have any questions, but generally speaking, everyone doesn't know how to cherish it, no, and don't go up to ask questions.

Originally, Rococo did not plan to participate in this mathematical Olympiad, after all, she had little experience; second, the brain does not turn as fast as others, so as not to lose face when you get it; Third, that is Luo Yanmin, but it should not only be Luo Yanmin, I believe that teachers all over China are like this, why can't these teachers ask if they, as students, are they willing to accept it when they arrange things for others? Throw it directly at them, what is it!

"Maybe it's hypocrisy." Rococo sighed secretly, and then took the test paper and read it as he walked.

In the first question, if the set M, {2,5} is a subset of M, and M is a subset of {1,2,3,4,5}, then the number of different M's is: .

Hi, such a question, Rococo still knows, list all the possible M's, count them and know it. This is the most straightforward and dumb method, and there is no doubt that by enumerating it, in the end, Rococo vaguely came to the conclusion that the answer should be seven.

But what if the question was not preceded by {2,5} and followed not by {1,2,3,4,5}, but {a1,......,an} and {a1,......,an,an+1,......,an+m}!?

That's right! If this question is changed like this, then Rococo is already confused. If you have to do it, then Rococo may choose a few random examples and look at the pattern.

For example, {2 numbers} and {5 numbers} try once, {3 numbers} and {6 numbers} try once, {2 numbers} and {6 numbers} try again, and so on, through careful and careful trial step by step, until you try the approximate pattern.

Rococo knew that smart people would never do what she did, so it was clear that she wasn't smart.

After reading the first question, then Rococo continued to look at the second question, and then the third, fourth, and fifth questions......

until you have read all the exercises......

Rococo couldn't help but think: Okay! Although she advocates the all-round development of 'morality, intelligence, physical fitness, art and labor', this kind of topic should be left to those who want to be mathematicians in the future, rather than ordinary mortals like her. Ordinary people like her can calculate the general addition, subtraction, multiplication and division, as long as they don't know if they don't have to find money when they buy something.

At the end of the exercise, at the beginning of the answer, Rococo saw Tang Yu's words, "The competition is two months later, you can work hard, it doesn't matter if you get good results or not, you should cultivate your own mathematical thinking - Tang Yu." It ends with a scribbled autograph.

After reading Tang Yu's message, suddenly, Rococo stopped, she thought about it and thought it seemed right, after all, she even did the humiliating thing of running under the national flag of last week's meeting, do you still care about failing the Olympiad exam?

After figuring this out, Rococo was no longer entangled, on the contrary, Rococo began to dangle with another matter.

……

For the next two days, Tang Yu didn't come to class, it was said that the old mother was admitted to the hospital for surgery or something, and she needed someone to accompany her.

The math class of the first (9th) class of senior high school was undoubtedly handed over to another math teacher for the time being.

It's good to die, it's exactly the one who asked Rococo before.

Rococo found that the teacher said the most is.

"What's the answer to this question?"

"Can't you see it yet?"

Rolling his eyes, he looked like he couldn't do anything about the students below.

"Think about it."

"I'll call someone up and answer."

To be honest, such a teaching atmosphere, such a teacher, there is no sense of closeness at all, and the students below are more afraid. Roll your eyes when you don't agree, call people up to answer questions if you don't agree, I feel that cramming education is not terrible, but what is terrible is that this duck has to be scared every day.

The next few days......

The whole class of the first (9th) class of high school was trembling. But it's okay! After nearly a week of nightmares, the students in the show finally ushered in their National Day holiday.