Chapter 219: 2 deadwood

“You must have heard the answer I said just now, or you have seen this question before!” Li Xuan was taken aback for a moment, and immediately said with great certainty.

If Li Yi gave the answer after this stick of incense or even within a stick of incense, he would be surprised, but it is within his capacity.

After all, in his eyes, even if Li Yi is not the most intelligent person in Jingguo, he is not far behind.

As he had just finished speaking the question, Li Yi could say the correct answer in one go. This is not a human, but a demon.

This time, Li Xuan really guessed wrong. He suddenly jumped up like a hysteria just now, which frightened Li Yi. How could he have the mind to listen to what the guy said.

Although I have seen similar questions before, the answer is different if you change the number. There is no second possibility he said.

The problem of chickens and rabbits in the same cage, in later generations, I am afraid that as long as elementary school students who have studied Mathematical Olympiad, they will be able to report the answer in one go, without resorting to cheating at all.

Isn’t this self-infuriating to use this kind of elementary school difficult questions to test yourself?

“Hehe, if you want to go wrong, just say it, why make such an excuse.” Li Yi curled his lips, looked at him, and said disdainfully.

Li Xuan’s handsome face was flushed red, dignified and dignified, it was not very pleasant to say about the recklessness, but he was more eager to know how Li Yi got the answer.

“As long as you tell me how you solved this problem, in addition to the said one hundred taels, I will lose you one hundred taels.” For Li Xuan, money is just a number, and he feels more I am interested in the novel methods that Li Yi throws every time.

Even Li Mingzhu’s eyes were on Li Yi. She knew the question and didn’t know why. She tried them one by one and took a little time. Naturally, she could try out the answer, but he could do that. Calculate quickly, if you don’t know the answer in advance, or use a method they haven’t seen before.

Money is only a number to Li Xuan, but not to Li Yi. It is a brick, a tile, and a room in a big house…

“You just said ——There are thirty-five heads on the top and ninety-four feet on the bottom?” He said, acquiescing to Li Xuan’s act of sending money just now.

Li Xuan nodded repeatedly.

“We suppose, just hypothesis…” Li Yi stretched out his hand and gestured, “Assume that these chickens and rabbits are well-trained.”

Li Xuan’s face is dumbfounded, and he solves the problem. Does it have anything to do with whether these chickens and rabbits are well-trained?

However, given that Li Yi has never taken the usual path, he still feels to listen first.

Li Mingzhu frowned upon hearing this, and then quickly let go, apparently having the same thoughts as Li Xuan.

“If these chickens and rabbits are very obedient, clap their hands, they will lift one foot…”

“Is there such a solution?” Li Xuan can’t listen anymore. Where are such obedient chickens and rabbits, if such a bizarre method can make sense, then just let those chickens and rabbits talk and talk. Forget the number of the same kind.

Li Yi glared at him, “Do you want to know the method?”

“If you talk nonsense like this, you won’t have any money.” Although Li Xuan was stupid, he was not so stupid.

“Keep on talking.” Li Mingzhu seemed to understand something, and urged with a strange look.

Li Yi glanced at Li Xuan with a complicated look, and Li Xuan understood what he meant.

He was laughing at himself for being inferior to Pearl.

However, Mingzhu was smart since he was a child, and Li Xuan discovered this when he was taught by her husband together in the palace.

Although this is an indisputable fact, in my heart, why is it so unpleasant?

“Clap once, raise 35 legs in total, and pat twice, raise 70 legs in total. At this moment, all the chicks are sitting in the cage with no legs to count. Each rabbit is left With two legs down, twenty and four remaining legs in the cage, the number of rabbits is twelve and the number of chickens is twenty-three.”

As Li Yi spoke slowly, Li Mingzhu’s eyes were bright, while Li Xuan was dumbfounded.

At this moment, I am afraid that only a galloping horse can describe the true feelings in his heart.

It’s **** good too?

The problem that has plagued him for a whole day can be solved with only two palms?

Didn’t the old man say that yesterday?

Why? This is a problem that has been passed down from ancient times. It doesn’t matter if it can’t be solved, because the master himself only knows the answer and doesn’t know the specific solution.

He looked back at Li Yi–it really was a demon!

Li Xuan’s expression and Li Yi are all in his eyes, and he doesn’t surprise him much.

There are no Arabic numbers in this world, no linear equations of two variables, mathematics, at best, it can only be called arithmetic. It is still in the stage of ignorance. It may be a few hundred years before there will be a mathematics master who is still Astronomer or Taoist…

After all, the imperial examinations don’t take these exams, and mathematics is not highly valued. It is not uncommon for a doctor of mathematics in the Imperial College to be stuck with the problem of a chicken and a rabbit in the same cage.

The method he used just now, called the “leg-raising method”, is not a joke of bloggers on the Internet in later generations. The ancient arithmetic classic “Sun Tzu Suan Jing” did exactly this way to solve this problem.

From the reactions of Li Xuan and Li Mingzhu, it can be inferred that “Sun Tzu Suan Jing” either does not exist in this world, or it is too old, and this problem-solving method is lost.

“It’s incredible to have such a problem-solving method.” Li Xuan couldn’t help but exclaimed.

He is not really interested in mathematics. He just wanted to solve this problem and let the teacher who taught him take it seriously. After thinking for a whole day, he tried the correct answer in his mind, and then used Li Yi’s A different way, it only took two breaths.

“It’s unbelievable, it doesn’t matter, we can try another method.” Li Yi is still very kind, at least to make Li Xuan feel the value of two hundred taels of silver.

“There are other ways?” Li Xuan exclaimed, and moved his head.

“First of all, you need to remember a new counting method…”

Li Mingzhu and Li Xuan watched Li Yi use a pen to write and draw on rice paper. Those strange and simple figures have never seen them before. The combination is a new counting method.

Both of them have received aristocratic education and have profound background. Although this thing seems novel, it is not difficult to understand. After a brief explanation by Li Yi~IndoMTL.com~ It took a little time to put this set The law is greatly offset.

Tsk in my heart, this set of methods is undoubtedly much better than Jing Guo’s current counting method, more convenient and simple…

“This is called the equal sign. This is a plus sign, a minus sign, and this cross. It can be understood as a number that is not known for the time being…” Li Yi didn’t think so much at first, but when he really started explaining It is not much easier for them to popularize this knowledge than to teach two children who have just started elementary school.

But the words have already been spoken, so I can’t give up halfway, so I have to be patient and move forward little by little.

After half an hour.

“In this way, the two unknowns are solved, the number of chickens and rabbits.” Li Yi sighed with a long sigh of relief, and finally spread it to them from beginning to end, feeling quite exhausted.

It’s still simple to teach the bear kids, just make up some stories and you can fool it. If Li Xuan asks this kind of question again in the future, he will definitely not do it without adding money!

“Understood?” He looked at the two and asked expectantly.

Although the process has been a bit tortuous, if they understand it, it will be a little comforting in their hearts.

“No.” Li Xuan said firmly without hesitation.

Li Mingzhu showed the same doubts.

“Two deadwoods” Li Yi sighed in his heart.

“Little ring, see off!”

Looking at the little maid walking to the door, Li Yiguo broke.

“Auntie, I’m eating…” The little maid said weakly, standing at the door.

“No hurry, no hurry, eat first, wait until the meal is over, you should tell me a few more times and you should understand.” Li Xuan patted his shoulder, stood up, and looked at him with a smile on his face. The little maid asked: “Girl Xiaohuan, where do you eat?”

Please remember the first domain name of this book:. Three heads mobile version reading URL: