In fact, ancient mathematics was still more 'practical'.

It's like a lot of exercises in the nine chapters of arithmetic, which have a certain relationship with the real scene.

However, Li Chong didn't use the calculation chip just now, which was also a reminder from Li Er, and Li Chunfeng found out.

I saw Li Er sitting on it, idle and asked, "Li Chong, have you finished answering?" ”

Li Chong saluted and said, "Back to Your Majesty, I'm done." ”

Li Er said, "What about the calculation?" Why didn't I see you, no, you two are using the chips? ”

Li Chunfeng raised his head at this time, his eyes were stunned, and he felt that something was indeed wrong just now.

Because even if Li Chong is a bachelor, then you have to use the calculation.

Even if he made his own problem, if he wanted to calculate it himself, he would at least use the calculation.

Seeing Li Chong, he stood up and said: "Back to Your Majesty, the ministers don't need to calculate the plan." It's just a bit of waste paper. ”

"Oh? Then show me it. ”

Li Er was very curious, and then a palace maid came over and took the answer.

Li Eryi looked at it and told the truth.

I don't know, I thought Li Zhong was doing it, what the hell is this ghost drawing, but in the end, I used words to explain the answer.

So, at least, Li Zhong has calculated the answer.

Moreover, the volume is also very neat, but it is a little incomprehensible.

And the eldest grandson Wuji and they were also curious at this time, to be honest, which of them didn't learn the point technique.

Merely......

They've only dabbled in a little bit of research, but they've not studied it deeply.

If you ask them to solve a five-element equation, some people may not be able to solve it, like Du Ruhui, it is very likely that they can solve it.

It's just that......

There is no need for it.

Compared with arithmetic, the classics such as "Zuo Chuan" and "Shangshu" are really more important.

Li Er is also very generous, after reading it, when he saw that they wanted to see it, he also asked the palace maid to pass it on.

Fang Xuanling, Du Ruhui, eldest grandson Wuji, etc., all took it one by one and took it to see.

This......

As soon as they saw it, they all turned heads and ears.

Mainly, they can't understand it at all.

The eldest grandson, Wuji, asked, "Master Li, what are you writing?" ”

"Equations."

In ancient times, the concept of equations had long existed, but the equations that Li Chong said were a little different from the equations in their impressions.

"You say it's an equation? How come we can't read a word? ”

Li Chong said: "It's normal for you to not understand, because this is a special way to solve equations. ”

"Father, I want to see it too."

Li Chengqian almost stood up and asked for it.

Li Er nodded slightly, and then Li Chengqian went over to find his uncle, and the eldest grandson Wuji also said, "Prince." He handed Li Chong's answer to him.

Let's be honest.

Li Chengqian couldn't understand it even more. However, the teacher's words have also grown a lot in the past year and a half.

After Li Chengqian found that he couldn't understand it, he didn't pay attention to it, but continued to let the answer pass on.

Wei Zheng is actually not interested in this kind of thing.

But now that it has been passed on to his own hands.

He also opened his eyes slightly and looked at it.

Boy!

What's this bunch of ghost paintings?

But don't say it, although you can't understand it, it's quite beautiful.

And......

It seems to be very lawful, but it's not really completely blind.

Wei Zheng looked at the answer, and then expressed his opinion: "Since Bachelor Li has already made it, is it time to announce the answer." ”

Li Chong was not in a hurry, looked at Li Chunfeng, and said, "This brother hasn't done it yet." ”

Since Li Chong didn't know the other party's official position at the moment, he called his name directly, and it seemed like that, so he had to use his brother.

Li Zhong said so.

Everyone looked at Li Chunfeng.

Li Chunfeng originally wanted to struggle again, but after thinking about it, he still gave up.

After all, at this speed, he is already inferior to others.

But then, his words made everyone present in an uproar.

I saw Li Chunfeng say: "Back to Your Majesty, the minister can't do a single question." ”

Everyone was confused.

Even those who are familiar with each other can't help but think, we all know your kid's arithmetic, and we usually see you put up the calculation chips, which is faster than us old guys who are neat and fast.

Why, you can't do a single question?

At this time, Li Chong also hurriedly came out and said: "Actually, it is the ministers who are not martial. ”

The crowd was even more amazed.

Li Er also stroked his beard, which was said to be a bowstring.

"What's going on?" he asked. ”

Li Chunfeng and Li Chong glanced at each other.

As if communicating, who said first.

As a result, Li Chunfeng, the kid, took the lead, and said, "Your Majesty will understand after reading the topic." ”

As he spoke, he submitted the question given by Li Chong.

Li Er looked at the question with suspicion, and quickly read the topic.

The topic is simple.

There are two socks in one drawer, and the probability of taking out both socks at random is one in half of all possible cases, Q: If the number of socks in the drawer is an even number, then how many socks are there in the drawer at least?

This is a proper probability problem, but it is completely beyond the scope of all the arithmetic that Li Chunfeng has learned before.

And......

This question is completely confusing when you look at it, and it is very jumpy.

The front also talked about the possibility of taking out two socks, but why did it suddenly jump to the point where the number of brocade socks was a double number?

Li Er couldn't help but glance at Li Chong when he saw it, and his eyes seemed to say, it's not that my level is low, but that this question of yours can be calculated by a normal person?

Moreover, this does not give people the opportunity to use the calculation chip at all. Looking at the whole topic, there is only one half of a number, and an even number, how do you calculate this thing?

And if the first question is imaginative, then the second question is even more outrageous.

Li Zhong casually drew a square field, and also drew a parabola in the square field, saying that above this square field, every point corresponding to the length has a unique corresponding point on the top of the width, and also gave a sentence explaining the mathematical relationship between each other, and then asked, what is the product of the shadow part (below the parabola).

Li Er looked sideways and vertically, to be honest, he had already begun to doubt Li Chong, could this thing really be calculated?

In the last question, try to calculate pi without using circumcision.

This pi Li Er knows, like a craftsman making wheel preparation or something, he has to use this to calculate, and it can't be counted as much, nor can it be counted as less, it is too much and wasteful, and if it is less, the wheels can't be combined, but the problem is that you haven't given me a single number, how can I calculate it for you.

Li Er glanced at Li Chong.

He couldn't stand it anymore.

Aren't you bullying honest people!

asked Li Chongdao: "Can this thing really be calculated?" ”

Li Chong said: "It's a little difficult, but it can really be calculated." ”

When Li Er heard him say this, he was relieved.

said: "Pass it on, take a look, and see who can figure it out." If anyone can figure it out, then I will reward him with a horse. ”