"Isn't it difficult?"

When the other math teachers heard this, they covered their mouths a little and smiled secretly, this Su Yu is really full of trains, and he dares to say anything.

Each of these questions in the National Mathematics Competition is carefully considered by the questioner and comprehensively examines the comprehensive ability of the candidates.

Normal high school students, even if they are given a bell to do a math problem, may not be able to do it.

Even if they are math teachers, it is very difficult to do.

If it weren't for this difficulty, Kyoto University would not have directly admitted the first place in the national mathematics competition.

The old man in mathematics also didn't believe it: "Do you think these questions are not difficult?" ”

Su Yu nodded, he stared at the questions in the test paper, his eyes were rolling, and his mind was quickly calculating.

He looked at the test paper, there were a total of fifty questions, divided into two parts, one was multiple-choice questions, and the other part was fill-in-the-blank questions and large questions.

In the ten minutes he had been staring at the test paper, he had already calculated the twelve multiple-choice questions at the beginning of the first paper.

Because of the fast calculation, his head was a little dizzy, as if the engine was spinning too fast and there was a phenomenon of heating.

He had to admire the author of the National Mathematics Competition, which was so special.

There are a few pits in a question, and even a dozen pits are placed in a difficult question, one pit after another, and it is not the same kind.

Whenever you think you're doing the right thing, you suddenly realize, huh? Why is there something wrong, and then I thought about it differently, I wiped it, it turned out that this is a pit.

And then when I finally felt that I was doing the right thing and felt that there was nothing wrong, I suddenly found out, huh? Why is there something wrong, it turns out that it is still a pit......

A problem, Su Yu used more than a dozen methods to solve.

Su Yu Buddha......

These questions are not for high school students at all, because the scope of knowledge of these topics has far exceeded the knowledge of high school.

When he did these problems, he not only used the calculus of the university, but also the unpopular knowledge that only master's students use.

Although it only took ten minutes to do these questions, Su Yu felt that these ten minutes were more difficult than two hours.

"I found out I was wrong, I looked closely, and the questions were really difficult." Su Yu covered his somewhat hot forehead and spoke.

When the old man in mathematics heard this, the doubts in his eyes were put away, thinking that this was the right thing.

"It's normal to be difficult, otherwise it won't reflect its value, after all, it's a national mathematics competition, and the first score will be sent to Kyoto University."

"These test papers, even if they were done for our math teachers, would cost a lot of gray hair."

The old man in mathematics picked up the old-fashioned white porcelain cup on the table, took a sip of water, and comforted Su Yu.

When other math teachers heard Su Yu's words, they thought that Su Yu finally stopped bragging, and these questions were simple before, but now the questions are difficult.

If these questions are simple, then where do they put the old faces of these math teachers?

"It's really hard, it took me ten minutes to finish these twelve multiple-choice questions." Su Yu sighed, feeling that he was too difficult.

All the teachers were petrified on the spot......

Do 12 multiple-choice questions in 10 minutes?

You must know that the question of this test paper is not an ordinary college entrance examination paper, but the question of the national mathematics competition.

There are many traps set in each question.

It is simply impossible to do 12 multiple-choice questions in 10 minutes.

Soon, the math teacher in the office shook his head slightly, feeling that Su Yu, a student, was really too face-saving, and even dared to blow such unrealistic words.

Completing 12 multiple-choice questions in 10 minutes, I'm afraid they are all done without thinking.

If you only choose ABCD, it doesn't take ten minutes at all, a few seconds is enough.

But they still have some curiosity and want to see the test papers made by Su Yu.

They walked over and gathered around Su Yu.

The old man in mathematics was stunned when he drank water, and he didn't believe it in his heart, frowning, thinking that Su Yu could have a bad problem of bragging.

Ten minutes to do a multiple-choice question in the national competition? Even as a teacher, he can't do it, not to mention that Su Yu is still a student.

In his expectation, Su Yu did the first two or three multiple-choice questions of the test paper correctly within ten minutes, which was already a good performance.

Ten minutes after doing the 12 multiple-choice questions correctly, he definitely didn't believe it.

Although the old man in mathematics was thinking about this, he didn't come out, but looked at Su Yu in disbelief: "Take the test paper you are doing, bring it to me and take a look." ”

Su Yu touched his chin, picked up the black pen in his hand, wrote all the answers to the 12 multiple-choice questions in the question, and handed them to the old man in mathematics.

As soon as the old math man took the test paper, the other math teachers gathered around and laughed.

"Hehe, it's the first time I've heard that there are students with simple test papers."

"Students who finish multiple-choice questions in ten minutes have either never seen it, or they are too miserably."

They chatted, apparently taking Su Yu's completion of the twelve choices in ten minutes as a joke.

The math old man waved his hand: "Don't rush to conclusions, let's see how these answers are." ”

He pulled open the drawer, took out an answer, and began to answer Su Yu's multiple-choice questions.

"Well, the first question is correct."

The old math man ticked the box.

"Huh? The first question really made Su Yu do it right, it seems that he is lucky, and he is quite accurate. The other math teachers muttered to themselves.

"The second question is also correct"

The math old man ticked again.

"The third question is still correct"

The other math teachers were surprised when they saw that the first three multiple-choice questions were all correct, thinking that Su Yu still had some strength, and he was also very lucky.

Even if they are given 10 minutes to do the paper, they can only make sure that the first three or four questions of the multiple-choice question are correct.

The old man in mathematics was still changing Su Yu's multiple-choice questions, and read them out loud.

"The fifth question is correct."

"Question 6 is right."

……

"Twelve questions are correct."

"All right!"

As soon as the pen in the math teacher's hand was loosened, it fell on the table, and his eyes showed shock, it was all right, which was also incredible.

The other math teachers also changed their eyes, and they scrambled to pick up the test paper.

At first glance, it's all ticks, and there really isn't a single question that's wrong!

Some math teachers still don't believe it.

The multiple-choice questions are all right, even they can't do it! What's more, it's Su Yu, a student.

"Teacher Yang, you can't make a mistake, right?"

"Yes, if you change it again, it may or may not be wrong."

The old math man nodded: "It's possible, I'll change it again." ”