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The middle-aged man raised his eyebrows: "Your question is quite interesting. If the calculation is correct, the answer should be 970 essays, right?"

Zheng Zhixun was stunned after hearing this. You must know that he was stumped by this question for a long time. He originally thought that only a monster like Yan Kai could figure out the answer so quickly.

Unexpectedly, I met another one today.

He nodded and admitted: "The answer is indeed 970 essays. I wonder which arithmetic master is this?"

"Hahahaha, this is the first time someone asked me to do math!" The middle-aged man smiled heartily: "My math skills are ordinary, but I also have an advantage, that is, I am very good at discovering traps."

"Little brother, there are so many traps in this question, but just think about it, did Li Si ever lose a penny from beginning to end?"

Inspired by him, everyone else started making calculations.

Li Siyi initially took out a thousand cash and exchanged it for one tael of fake silver. But after discovering that the silver was fake, he asked Wang Er for a thousand cash back.

In other words, he does not make any gains or losses during this transaction.

So how much money Wang Er lost depends on how much money Zhang San got.

Zhang San got the change of 790 Wen, and took away the beans worth 180 Wen. It was not like he made 970 Wen in vain.

He made 970 Wen, so Wang Er naturally lost 970 Wen.

At this point, these young men studying arithmetic have all woken up. Sure enough, the price of soybeans in this question, and the exchange of change with Li Si, are all traps.

"Thank you sir for clarifying my doubts!" ​​A group of young men saluted.

Although they are arrogant, they still respect people who are really capable.

What's more, this middle-aged man is extremely popular, and this is Luoyang, one of the two capitals in the East, which is as famous as Chang'an in the Tang Dynasty.

Who knows who this middle-aged man is? Of course it's better to be polite.

"Hahahaha, it's not really a puzzle answer, but I also have a question that I would like to ask you guys for."

Those young masters admired his idea of ​​solving the problem just now, so they nodded and asked him to come up with the problem.

"How about I ask you a question?"

At this moment, the middle-aged man had not yet spoken, but a fat man behind him spoke.

The middle-aged man glanced at him and knew that he was going to cause trouble, but it was good to think that he would come up with the question. Now is the time when he is thirsty for talents. Although these teenagers are young and are children of aristocratic families, if they are among them If there are good seedlings, they may not be unable to be used by him.

"Then I'll trouble Brother Sun!" said the middle-aged man: "Brother Sun's arithmetic is better than mine. Why don't you listen to his questions?"

Anyway, it’s a question, who’s the best one is not the best one? No one objected.

Fatty Sun smiled and said: "I came to Luoyang this time to collect debts. There is a family of five brothers who owe me a thousand cash. Their boss paid me back three hundred cash this morning, and then told me that each of the brothers below They will all pay less than their elder brothers, but the amount is the same, so I want to ask, how much will it cost if I go to find their second, third, fourth, and fifth children?"

As soon as he finished speaking, Yan Kai's eyes narrowed. This fat man is really shady. Most of these young men are at the elementary school level. It was good for him. He directly came up with an arithmetic sequence question.

To test these gentlemen, I'm afraid it would be a bit overkill, and Yan Kai estimated that even if they had to count one by one to figure out the answer, they might not be able to figure it out in a short while.

Sure enough, as soon as the fat man finished speaking, these gentlemen, who were not inferior to others, began to make calculations. Even Zheng Zhixun began to lie on the table and use manuscript paper to make calculations.

The whole room fell silent, and the middle-aged man noticed Yan Kai immediately.

Each young master has one or two followers standing behind him, but Yan Kai's temperament is the most different.

Moreover, the other followers obviously had no interest in their master's calculations, and just stood behind like wooden figures.

Only Yan Kai was different. The middle-aged man noticed that he was not only watching the young masters nearby doing calculations, but also shaking his head slightly from time to time.

Yan Kai didn't know that his micro-expressions would fall in the eyes of the person opposite him, immediately revealing his differences.

To be honest, such an over-the-top question is too difficult for these gentlemen, especially when they count in Chinese.

I was putting the plans back and forth, one or two of them were sweating on their foreheads, but they couldn't find any ideas.

On the contrary, it was his apprentice Zheng Zhixun who discovered a little bit of the secret of reverse order addition. He accidentally mentioned this at that time, but to his surprise, he not only remembered it, but even tried to use it to solve this problem here.

It's just that he hasn't been taught in detail yet, so he got a little confused after a few calculations.

"Try setting the amount of difference between them as x!" Yan Kai whispered behind Zheng Zhixun.

He had been taught linear equations of one variable, so Zheng Zhixun knew the meaning of x.

Although the scene was quiet, his voice was small and he happened to be farthest away from the middle-aged people.

So they saw Yan Kai's mouth move, but didn't hear what he said.

But such an action was enough to attract the attention of those people.

Zheng Zhixun got the advice and set the difference amount as

Zheng Zhixun was overjoyed. He added x to each person's amount and calculated it. Then he calculated the sum. Isn't it exactly one thousand cash?

When he looked happy, the middle-aged man quietly came behind Zheng Zhixun with his people.

He saw that the manuscript paper in front of him was full of unknown ghost symbols, but the final answer was written in words.

"The boss: three hundred, the second boss: 250..."

The fat man who asked the question had a look of shock on his face. He had already expressed his emotions and anger, but now they were all frightened. This shows how much Zheng Zhixun shocked them.

The middle-aged man looked at Yan Kai with burning eyes, as if he wanted to see through him.

You must know that Zheng Zhixun was obviously in trouble just now, but this boy-like child whispered a short sentence behind him, which made him look happy, and then he quickly came up with the correct answer. This is a bit interesting. .

Zheng Zhixun looked up and found that several middle-aged people were coming to his side. He raised the manuscript and said loudly: "Sir, you only need to find the second among the brothers to repay you 250 yuan, and find the third..."

This kind of question is difficult to calculate, but if you know the answer and work backwards, anyone who can add can figure it out.

All the young men looked blankly at the high-spirited Zheng Zhixun.

How did he... become so strong!