Old Tang shook his head and smiled, pointing to the question in front of Cheng Nuo and said. "What kind of question do you think he's doing now?"

The math teacher was suspicious for a moment, and then came over curiously.

"Hey, this question, Mr. Tang, you actually asked a student to do this question?!"

When the man saw the one that Cheng Nuo was studying, he couldn't help but gasp.

The origin of this question done by Cheng Nuo is not small!

In last year's IMO (International Mathematical Olympiad) finals, the penultimate question was this.

According to rumors, at that time, there was only one person in the entire delegation of China, and only one person in a dozen people solved the algorithm of this problem. And only five of the students who participated in the competition were solved.

One of the teachers in their math group didn't know how to get it.

A couple of teachers in their math group also tried to do it.

Results...... It was very uncomfortable for them, the teachers, to study for two or three days, but there was little progress of much practical significance.

Now that he saw that Lao Tang actually took out this question and asked a student to do it, the surprise in his heart was inevitable.

You must know that the people who represent Huaguo to participate in the IMO competition are the best of Huaguo's high school students, and they are math geniuses selected from millions of students. And these mathematical geniuses who represented Huaguo were only one person who solved this problem.

You can imagine how difficult this question is!

Did Mr. Tang think that this student in his class could be compared to the genius students who participated in the competition?

The male teacher wanted to stop Don's seemingly ridiculous move.

He just wanted to say something, but was stopped by Old Tang.

"Shh~, be quiet, it's almost a critical time, don't disturb him. ”

Old Tang's eyes were fixed on the strings of formulas that Cheng Nuo had listed on the paper. The proof of the first question of this question has reached a critical moment.

The teacher standing behind Cheng Nuo always thought that Cheng Nuo was just writing and drawing on paper casually. After listening to Lao Tang's words, he realized that it seemed that the kid in front of him was really proving this problem!

He looked at Cheng Nuo's proof steps from the beginning, and the more he looked, the more surprised he became, and his mind was also as immersed in it as Old Tang.

The teachers of the math group came in one after another, and when they saw a few people around Lao Tang's desk, they went over to have a look.

Like the first teacher, they were surprised that Old Tang actually gave this question to a student to do. But after seeing that Cheng Nuona had already written two full sheets of A4 paper, he was completely speechless.

After a while, Cheng Nuo gathered four or five focused math teachers behind him.

And Cheng Nuo, who was immersed in the process of verifying math problems, didn't notice that there were already people standing behind him. Cheng Nuo's attention was extremely focused, and his brain was running like a machine that never stopped. One by one, the numbers were calculated and combined in Cheng Nuo's mind.

"It's finally done!"

Ten minutes later, Cheng Nuo stopped his pen and leaned back in his chair to stretch.

As soon as he turned his head, he stared at the four or five teachers behind him.

The atmosphere suddenly froze for two or three seconds.

"Haha, haha. Teacher, what are you all doing standing behind me, hurry up and do it!" Cheng Nuo got up and scratched his head in embarrassment.

He was also wondering why there were so many teachers behind him.

"This classmate, you... What's your name?" said a bespectacled teacher in his forties, with a tremor in his voice.

"Teacher, my name is Cheng Nuo, and I am in Mr. Tang's class. Cheng Nuo replied honestly.

"How did you solve this problem?" The teacher pointed to Cheng Nuo's proof steps written on five sheets of A4 paper, and the shock in his heart has not subsided yet.

It's scary!

It can be said that Cheng Nuo calculated this problem from scratch under his nose.

As the saying goes, hearing is false, seeing is believing, and this is how he witnessed Cheng Nuo's bewitching behavior.

"How? I did it, and I did it, and I made it. Cheng Nuo continued with a calm face, "Actually, in addition to proving that the steps are a little complicated, this question is actually not too difficult. If you do it in an hour, it shouldn't be a problem! As for the teacher, you can do it in 10 minutes!"

Poof——!!

The old Tang who drank tea was sprayed by himself again. However, seeing that the other teachers were also constipated, he felt a little better.

Cheng Nuo looked at the abnormal faces of the teachers and wondered a little.

Did you say the wrong thing? Did you underestimate the math skills of your teachers?

He said that his speculation about this problem was completely based on his own feelings, and in his opinion, although the difficulty of this problem is there, as long as the idea is correct, the rest is just calculation. But with that huge amount of calculations, it is a big job for Cheng Nuo. This is also the reason why it took Cheng Nuo more than ten minutes to prove it.

But now it seems that the teachers' computing skills are not bad compared to their own. It's right to think about it, after all, most of them are veteran teachers who have been in the industry for more than ten years, and they are just students, so they are definitely far inferior to them.

"Haha. I mean, teacher, you'll be about five minutes or so. Cheng Nuo forcibly explained a wave.

"........." all the teachers looked at Cheng Nuo with resentment.

Old Tang waved his hand helplessly, this is his signature bombardment action.

"Class is coming soon, Cheng Nuo, you go back first, these steps of your certification will be placed here with me first, if you want to, come to my side to get them!" Old Tang looked at the other teachers teasingly, "If you stay here, I'm afraid these colleagues of mine won't agree." Haha, okay, you go back first. ”

"Oh, teacher, I'll go first. Feeling the resentful eyes of those teachers, although Cheng Nuo didn't know what was going on, it was time for him to slip away. Saying hello to Old Tang, Cheng Nuo hurriedly left this place of right and wrong.

Mathematics Section Office.

As soon as Cheng Nuo left, the teacher took Cheng Nuo's steps to solve the problem on paper, and looked at it word by word.

While watching, I also exclaimed, "It turns out that this formula is used here, and this is to prove this formula, genius, simply genius! ”

Not only him, but the other teachers were also smacked after reading Cheng Nuo's problem-solving steps.

"Teacher Tang, this is Cheng Nuo from your class, it can be said that he is a demon! However, why have you never heard of him before?" a teacher asked suspiciously.

It stands to reason that no matter what class their school has produced such a demon in mathematics, none of them will not know.

"Old Tang, this is your mistake, such a genius, you have been hiding it, it is almost ruined his future. ”

"Yes, if he is allowed to participate in this year's Olympiad, maybe he can win a championship for our school!"