Du Bian was very sure of his mathematics, but when he saw the appearance of the great grandmaster's ambition, he couldn't help but feel a little apprehensive.

After all, this is an all-round grand master, and it must not be underestimated.

So, he went to bed early, hoping to be able to predict tomorrow's topic in his dreams.

However, I don't know if the dream system thinks that this exam is irrelevant and Du Bian can win it, or if the dream system thinks that it is nothing for Du Bian to pick up 20,000 catties of dung, and it is even possible that the dream system and the great master want to give Du Bian some color to see.

In short, Du Chang had no dreams all night and slept until dawn!

When I woke up, I found that the old servant of the Great Grandmaster was already standing outside the door.

"Wake up? The Grand Master told you to hurry up and eat, and then start the arithmetic exam. The old servant said.

The grand master is so impatient, it can be seen that he is 100% sure of victory.

Now even Du Bian is extremely curious in his heart, what kind of question will the Grand Master have, making him so confident, he feels that Du Bian must not be able to answer it.

The last question was hard enough, amazing enough.

How far away is the moon?

In this era, in this world, this question is simply dazzling, and it can be used as an immortal chapter in arithmetic in this era.

Could it be that the topics prepared by the Great Grandmaster this time are even more amazing and more difficult?

Du Bian's heart couldn't help but be full of anticipation!

Therefore, he hastened to wash up, eat breakfast, and go to the temporary classroom arranged by the Grand Master.

......

Grand Master Ning Zongwu had already been waiting there early, holding a paper envelope in his hand, which contained today's arithmetic exam papers.

When did he wait here, was he so eager to see Du Chang lose?

Why don't you say anything about your great grandmaster, so anxious?

"Du Bian, don't blame the teacher for bullying you, if you admit defeat in advance, you only need to pick half of the 20,000 catties of dung to go down the mountain to fertilize, and I will let the monks pick the remaining half." The Grand Master smiled.

It's still a routine of surrendering and losing half.

Du said: "No need. ”

The Grand Master sneered: "Are you so complacent? I can tell you that even if the sun rises in the west, the sea overturns, the mountains and rivers turn upside down, and the stars fall, you will not be able to score 90 points in the exam. ”

Du Chang couldn't help but be stunned, is it so exaggerated? The sun is still rising in the west, and the sea is capsizing? What is the question of the great master?

"I am absolutely confident in my arithmetic skills. Du changed his way.

The Grand Master said: "Well, you are killing yourself, no wonder I am." ”

Then, he took out the prepared arithmetic test paper and put it on the table and bowed deeply.

Do you want to exaggerate that?

In fact, the Great Grandmaster does not worship the test papers, but the world's mathematics tutor, the mystic tutor Mende Soros, who almost represents the torch of Western civilization.

After worshipping, the Grand Master handed out the math test paper to Du Bian, and then turned the hourglass upside down and said: "The time for the arithmetic exam, one hour, officially starts." ”

......

Du Bian took the test questions and did not read them from beginning to end, but answered them directly.

Then, Du Bian was once again amazed by the Great Grandmaster.

These topics are really more difficult than the other, and they are completely epoch-making for this world, even more than one era.

Even on the modern earth, all of them are math problems above high school.

Later, there were even math problems that only appear in college.

However, Du Bian still answered them one by one.

The first course, done easily.

The second course is done with ease.

The third one, a little bit of brain-draining.

Fourth: I thought about it for five minutes.

......

In short, the topics are getting harder and harder.

In the end, even Du Yan was a little struggling, and it even took him more than half an hour to solve the ninth question.

Du Bian's talent of the great master was once again amazed and amazed.

It's horrible, it's the 17th century.

There are a total of ten questions in this arithmetic test, and Du Chang has answered the ninth question, and it has been a full hour and twenty minutes, and there are still forty minutes left to answer the last question.

The first nine questions are already difficult to achieve like this, and Du Bian can't imagine how difficult this last question will be.

The key is that the first nine questions are all correct, which is only 80 points, and the last question is full 20 points.

Taking a deep breath, Du Bian opened the last test paper and looked at the last question.

The last question is so short, a whole big white paper, only one line of words.

"Any even number greater than two can be written as the sum of two prime numbers, please prove it!"

Du Yan glanced at it and was instantly stunned.

It has always been him who has shocked others, and now he himself is shocked!

Goldbach's conjecture?

In the 17th century of this world, the Goldbach conjecture appeared?

What's going on here?

Could it be that there is another traverser?

The Great Grandmaster is definitely not a traverser, and Du Bian absolutely knows it.

But...... Is it a coincidence that Goldbach's conjecture appeared in the seventeenth century, more than 100 years before the other earth?

Now, he finally knew why the Great Grandmaster was in a victorious posture.

Because, this is simply an unsolvable problem, even in the 21st century on another earth, this is almost an unsolvable problem.

Du Bian couldn't help but look at the Great Grandmaster with hatred, only to see that the other party's expression was as comfortable as eating ginseng fruit.

Seeing Du Chang's stunned appearance just now really made the great master feel refreshed.

All along, Du Chang is arrogant, as if he is omnipotent, untitled. Now seeing Du Chang's deflated appearance, it's really refreshing.

Hahahahaha......

Du Bian gritted his teeth and said, "Great Grandmaster, you are so ruthless!"

"Hahahaha...... "The Grand Master smiled, "No poison, no husband." ”

The Great Grandmaster clearly knew that this meant that there was no measure and no husband, but he still deliberately misinterpreted it, and he was a heavenly eunuch, so where was the great husband?

Then, the Great Grandmaster said proudly: "You didn't agree to let you surrender and lose half of it before, but now it's too late to regret it, hahahaha......"

I've lost to this little broken boy several times, and now I'm finally angry.

The Grand Grandmaster smiled: "Do you hand in the papers now, or finish the time, there are still two quarters of an hour." ”

Du said: "Of course I won't just be tied up, and I will never give up until the last second." ”

The Grand Master said: "Okay, I won't be here to watch you, you can use all means to answer this last question, your stupid appearance is really not good-looking." When the time comes, you can obediently go and pick up the dung. ”

Then, the Grand Master went out with his back on his back.

Seeing this, the old servant outside the door hurriedly greeted him and said, "Great Grandmaster, how is it?"

The Grand Master said: 'The overall situation has been decided, and this little broken child has lost. “

"Great, it's still the Great Grandmaster, I've been waiting to see this little broken kid unlucky for a long time. The old servant said: "The old slave will go and call all the monks out, supervise Du Bian, this little broken child, and no one is allowed to help." ”

Next, the old servant shouted everywhere in the Lotus Temple: "All the monks have come out, and they all come out to see Du Bian picking dung." 20,000 catties of dung were picked down the mountain and fertilized hundreds of acres of land. ”

Suddenly, all the monks poured out and came to the vast courtyard of the Lotus Temple, ready to have a miserable onlooker on Du Bian.

......

However, at this time, Du Bian already showed a sly smile on his face.

If it is other extremely difficult questions, then Du Bian may really not be able to answer them, and even if they can be answered, there may not be enough time.

But the Goldbach conjecture?

Many of the sages of the modern earth have been struggling with this problem for decades.

Mr. Brown of Norway, Mr. Bucher of the Soviet Union, Mr. Hua Luogeng of China, and Mr. Chen Jingrun of China have climbed to the top of this holy mountain of mathematics little by little.

Although it has not yet been finalized.

However, it doesn't need to be done all of them.

Du Chang only needs 90 points, not 100 points.

So, Du Bian synthesized the results of these mathematicians and answered them on the last test paper, which filled a large page.

Although, this question is still not completed.

But Du Chang's answer to the mathematics of this world is already an earth-shattering breakthrough, and the mountain shakes the earth and subverts it.

Even...... It's a great monument!

Don't say that a score of 90 is no problem, even a score of 95 is definitely not a problem.

What Du Bian answered was the most advanced and remarkable answer in the world.

The sand inside the hourglass runs out.

The Grand Master walked in and said with a smile: "When the time comes, Du Bian, you go pick up dung, everyone is waiting." Now I'm not afraid to tell you that this last problem is completely unsolvable, and the whole world is unsolvable, and the teacher is to let you know the breadth and profundity of arithmetic, we can't sit in the well and watch the sky, we must be humble and cautious......"

Then he glanced at Du Chang's answer sheet, and his whole body was instantly petrified, as if it had become a statue!

......

Note: These chapters are not used to save the manuscript are all written now, and once again the code words are all night until eight or nine o'clock in the morning, please ask for recommendation votes to motivate them.

In the next chapter, Du Chang's way of pretending to be forced is going to change, it will be cooler and more chic, and it will definitely not disappoint everyone.