Although everyone here is not the owner of the horse, the boss will give you a Rolls-Royce.

Do you want that!

What's more, this is definitely a chance to show your face, in case you will, you say yes.

As a result, when the question was passed on, all the people below were silent.

Everyone looked at each other, and their faces seemed to be full of writing, you say, what the hell is this?

Is this something that a human can do?

While they were talking, Li Chong also opened his mouth to regain their attention and said, "Ahem! Your Majesty, originally, the minister was going to come up with something simple, such as chickens and rabbits in the same cage or something, and the minister only knew that chickens and rabbits were in the same cage. It's just that for a question like this, there are formulas in the arithmetic books, and as long as you are not a fool and memorize the formulas well, you can often easily calculate the answers. The minister thinks that the minister should not use such a topic to insult a top talent in the Tang Dynasty who serves in the Taishi Bureau and is proficient in arithmetic. So that's a little bit harder. In addition, Yichen's knowledge can only be this kind of topic, because those topics in ancient books, to be honest, I haven't read them very seriously. Just swallowed the dates and flipped over a few times. ”

"Mainly, the minister's family used to be poor, and he didn't have that opportunity."

After that, Li Chong turned his head and saluted Li Chunfeng in a friendly manner: "If my question is really too strange and not easy to calculate, I hope you will forgive me." It's all because I didn't study well. ”

Seeing Li Chongdu, he said so.

After Li Chunfeng was stunned, of course, he also accepted Li Chong's apology.

"Mr. Li is serious, in fact, I am not good at learning. Mr. Li can figure out my questions, but I can't do anything about them. ”

At this time, the eldest grandson Wuji said: "Speaking of which...... Li Chong's answers are all correct? ”

Li Chunfeng hasn't seen it yet.

As soon as the eldest grandson Wuji said this, Li Er's eyes looked at it, and someone sent Li Chong's answer to Li Chunfeng from Wei Zheng's side.

When Li Chunfeng came out of the question, he already knew the answer, so he only needed to look at it next, and he could basically know whether Li Chong's answer was correct or not.

However, when he got the answer sheet, he was shocked by the process at first sight.

'What is this!?' ’

'I don't understand it at all. ’

But fortunately, he knows the deword, and in addition, he can read the answer to the text at the bottom.

'One bucket of hemp is seven dollars, and one bucket of wheat is four dollars......

Let's just say, it's exactly right.

And the opening question is the same, the calculation is exactly the same as the answer in his heart.

is the last question, Li Chong's answer is very speechless, "I've heard of it, I don't have an opinion." ’

But no matter what, Li Chunfeng still had to say: "Your Majesty, Master Li's answer is completely correct. ”

Inside the Liangyi Palace.

There was an uproar.

But one person couldn't help but ask: "Mr. Li, why didn't you calculate the answer without doing the math." ”

The person who spoke was Du Ruhui.

Yes!

Du Ruhui wanted to know, after all, a smart person like him, even if he didn't have a chip in his hand, he had to think about it in his head.

Li Chong said: "This is very simple, just train the equation." ”

Fang Xuanling also followed: "What is a column equation? ”

Li Chong: "It's to pretend to know all the numbers you don't know, and then list a formula." ”

Li Zhong then showed them how a formula came about.

And then ...... When you have these formulas, you can eliminate all those things that you pretend to know, but don't know, according to the algorithm of addition. ”

"This step is repeated several times, and in the end you get an equation with only one unknown."

And so...... The answer is out. ”

Everyone looked dumbfounded.

This method, in the ancient classics, is not without a name, it is called 'positive and negative technique'.

The principles are actually the same.

It's just that......

Previously, they could only be calculated by calculating chips.

If one of these steps is wrong, the whole answer may be wrong.

Critically, it is not yet possible to check.

And now, Li Chong has written down the entire arithmetic process on paper.

Every step of the way, there are traces to follow.

Even......

It is no exaggeration to say that Li Chong's method can save at least ten times the time compared to the calculation.

If Li Chunfeng didn't come up with the answer to the question, then he would have to lay out this question by himself, at least for half an hour.

After all, it's a five-membered equation.

In addition to shock, it is still shock.

Of course, there are some people who can't keep up.

But it doesn't matter, they should be able to understand the reason, but they are not familiar with those symbols yet.

Li Chongdao: "This is the column equation. As long as there are numbers that you don't know, all of them pretend to know and list the equation relationships. Then, according to the relevant rules of the equation, the operation is carried out, the element is eliminated, and the answer is repeated, and finally the answer can be obtained. ”

Li Zhong looked at them, why didn't they speak one by one.

Do you think this method is not good?

That's right, too!

This method is too waste paper, you must know that Datang's paper is also very expensive.

I saw Du Ruhui suddenly sigh, "I didn't expect it to be like this!" ”

Fang Xuanling: "It's unexpected, haha." ”

The eldest grandson Wuji was unconvinced: "It's just that there are too many symbols, which makes people dazzled." ”

Li Chunfeng: "Master Li's method is very exquisite. ”

Li Er also felt that this arithmetic was really not something he could touch. His head couldn't seem to think.

Of course, if he used calculations, he might be even more at a loss.

He could understand this, at least before he did the math.

It may be a trance-like kung fu, and he forgets that Li Chong has counted it so far.

Li Chong said again: "Actually, the second question is the same. Pretend to know everything you don't know, and then, according to the Pythagorean principle, you can list the equations. ”

Li Zhong perfectly illustrates that there is nothing that cannot be solved with column equations.

Although the second question, Li Chong did not calculate in front of everyone.

However, Li Chunfeng already knew that the answer had been condensed into those two formulas, and it was only waiting for someone to unravel it.

Li Chunfeng: "Bachelor Li is worthy of being Bachelor Li, but students want to know more, how to solve Bachelor Li's topic?" ”

Li Chunfeng directly began to call himself a 'student'.

Li Chengqian didn't feel anything at first, but if the other party really became his teacher's student, then he couldn't accept it.

I was thinking about how to dispel Li Chunfeng's idea of apprenticeship.

When I saw his teacher, he said again: "Li, what, that's too humble." Just to talk to each other, why call yourself a student. My three problems can also be solved with equations, but maybe the first problem involves the problem of probability, so for a while, you may not have adapted to it. But once I've finished talking about what probability is, you should be able to figure it out by using the equation I just introduced. ”

Next, Li Chong gave an example, what is probability. And use a specific number to simulate it once for the other party to see.

Li Chunfeng suddenly realized.

Others also understood what probability was talking about.

It is the possibility of touching the socks or the stockings, and this possibility is ultimately expressed by scores, of course, it can also be expressed in words such as how many into grasp.

Li Chunfeng mastered the method in an instant, and performed a series of equations for Li Chong and everyone on the spot.

I can't pull it.

This is the mathematician's dedication to mathematics.

"But here are two numbers that I don't know, how do you solve this?"

After the list was over, Li Chunfeng was stunned again.

And the whole equation looks very complicated.

Li Chong saw that he had listed all the columns, so he could only say to him: "You can simplify it first and get a binary quadratic equation, but in fact, it is a one-dimensional quadratic equation, because you can substitute the number of brocade stockings into it, and then just see which one is the first to meet the title." ”

Li Chong divided five by two, and quickly calculated the answer for them by using the matching method, and the final answer was: twenty-one.

And the answer is substituted into it for verification, which is completely correct.

However, due to the complexity of the calculation process.

So basically most people are blinded.

But!

As long as the answer is right.

This proves that this can indeed be calculated, but it ...... This question may still be difficult for them to explode.

When Li Chunfeng saw the final result, he took three breaths in a row, and then he was relieved.

It's horrible.

I couldn't help but ask: "Master Li, are you really a human?" Are you sure it's not an immortal? ”