Jia Baoyu looked at Xiangyun with doubts in his eyes, and finally couldn't help laughing.

The status of mathematics in this era was very low, so the number game was also played less.

Suddenly encountered this kind of trick that seemed simple, but actually hidden mysteries, Xiangyun and others naturally felt strange.

Of course, this is really not a game of chance.

The reason why he can easily win Xiangyun is that there is a rule to follow.

Judging from the results, the reason why Jia Baoyu was able to accurately call twenty-six twice was because he stopped every time he said the number twenty-three, and Xiangyun had already lost whether he received twenty-four or twenty-four plus twenty-five in a row.

In other words, let's talk about twenty-three first and stop at twenty-three to win.

So, how do you guarantee that you will be able to call twenty-three?

In the same way, it is guaranteed to call twenty ......

Seventeen......

Fourteen......

……

This is interesting, two people say it apart, and they can say a single number or a continuous number at will, how to ensure that they can say these numbers every time?

This is done using the principle of a series of equal differences.

When two people play, what the other side says is uncontrollable, but what they say is controllable.

As long as you use your own controllable factor to pull the other party and form a controllable law, you can achieve your goal.

The other party can say two numbers at most, and he has to say at least one number, so it is obvious that three is controllable.

When the other party says one, you can say two numbers, and when the other party says two, you can say one, and always keep advancing three numbers in each round, which is the trick to ensure that you can win.

Then look at the bottom is twenty-six, which is the number you must call, then subtract three in turn.

Twenty-three, twenty, seventeen...... Five, two, these numbers are what you have to call.

That is to say, as long as two is called at the beginning, then according to the law of ensuring that three numbers are advanced each time, at the end, it will definitely be called twenty-six, no matter how the other party changes.

As for the second game, Xiangyun called Er away first, it doesn't matter, she doesn't understand this principle and can't control variables. Therefore, as long as any number in this group of equal difference sequences is called at random in the later process, you can continue to push down without affecting the result.

Therefore, Xiangyun lost twice.

It's the principle, and it seems a bit winding.

For this game to put it simply, it is to say that after the second-class number, the other party says that he will take two numbers by himself, and the other party says that he will take a number by himself, and he can guarantee that he will call twenty-six until the end.

Very simple trick.

When Jia Baoyu said this to Xiangyun and the others, they all showed a look of sudden realization.

Xiangyun was annoyed: "Oh, why didn't I think of such a simple truth, damn it, I fell for Brother Bao's trick!" ”

Regarding Xiangyun's hindsight, Jia Baoyu just smiled lightly.

Also, there are a lot of things that I think are difficult to understand before I figure them out, but once I understand them, I feel that it is very simple.

For example, the earth is round......

"Okay, if you want to lose the bet, you go and pinch your Sister Lin's shoulder."

Jia Baoyu launched the winner's claim.

The corners of Daiyu's mouth twitched, although she didn't care, and she didn't even like Xiangyun to pinch her, but it didn't prevent her from being secretly refreshed when she saw Xiangyun eating under Jia Baoyu's hands......

Xiangyun glanced at Daiyu and said, "It's the same when I go back in the evening......

She was busy discussing with Jia Baoyu the "profound" truth contained in this game.

She always felt that this matter was not so simple.

"Love brother...... Brother Bao, according to what you mean, not only twenty-six, but also thirty-six, forty-six are the same numbers, as long as you use this method, can you win? ”

"Only when one side knows the trick and the other doesn't know can a win ......"

"Well, what if everyone is allowed to say three numbers, is there a way to be sure that they will win?"

Xiangyun drew inferences from one case and initiated a question.

Jia Baoyu nodded.

Xiangyun's eyes lit up, and he hurriedly asked how to get it.

Jia Baoyu was helpless. Just now he just told Xiangyun about the skills of winning, and he didn't say anything about the difference series, because there were so many things involved, and it was too wasteful to talk about it.

But in the face of the tireless Xiangyun, if you don't explain it to her clearly, I'm afraid that you won't be at peace today.

That's why we only know the method, but not the principle.

Know the method and be able to solve a problem. Only by knowing the principle can you solve a class of problems.

So Jia Baoyu had no choice but to become a primary school math teacher and explain to Xiangyun in detail the "esoteric" mathematical principles contained in this kind of problem.

……

"Wow wow, Brother Bao, you are so powerful, you know so many things......"

A quarter of an hour later, Xiangyun, who had taken the scriptures from Jia Baoyu, pulled Jia Baoyu to praise himself.

Also, in a short period of time, she got a lot of things from Jia Baoyu's mouth. Although she didn't understand it very well, it didn't prevent her from feeling that it made sense.

As a result, Jia Baoyu's image in her heart rose infinitely again.

She thinks she is very smart, and she rarely convinces people, even Daiyu. Baochai is one, but it is only a person who serves Baochai.

Only Jia Baoyu made her feel like she was looking up to the mountains. I feel that this Brother Bao is like coming from heaven, and it is estimated that the sages in those books do not know as much as Brother Bao!

Xiangyun is not ignorant and fears the sages.

In fact, every truly learned person would not blindly worship the sages. Only nerds who have read half of the book, or who have not read it thoroughly, will blindly worship and deify the sages.

Jia Baoyu was the first person to make Xiangyun feel blindly worshipped.

She looked at Jia Baoyu with stars in her eyes, her face flushed......

She remembered that day in Wuyuan, she had just woken up and saw Jia Baoyu teasing Ying'er.

At that time, she felt very ashamed, it turned out that Brother Bao also said to outsiders, he would tease the maid in private.

But now that she thinks about it, not only does she not feel disgusted, but she feels that her brother Bao is a little real.

It's like a character who is too mysterious and high-minded, which is always difficult to get close to, but Jia Baoyu is different.

Although the status and intelligence are high, people are easy to get close to. Moreover, he was very good to her and took care of her since she was a child, so she liked to pull him and pull his arm like a little sister......

Jia Baoyu naturally didn't know Xiangyun's specific thoughts, but he could understand the little girl's expression.

Xiao Nizi, pregnant with spring?

Secretly proud for a while, Jia Baoyu put down her hand and smiled incomprehensibly.

Be a little reserved, one Xiangyun is still young, and the other one, Sister Lin Lin and Sister Bao are still beside them!

On the other hand, Tanchun also echoed Xiangyun's words.

"Really, the second brother's head doesn't know how to grow, and he is busy outside all day long, and he still has the heart to study these strange things......"

Yes, in an age when arithmetic is called a trick and a trick, it is indeed strange to delve into these things.

"It's funny, too."

Daiyu nodded and gave a pertinent evaluation.

Although she quickly knew the trick of Jia Baoyu's victory, she only looked at the law of reverse deduction of the results. Later, what Jia Baoyu and Xiangyun said, she also didn't particularly understand, and naturally, Jia Baoyu was covered with a layer of mystery.

However, she was much more arrogant than Xiangyun, even so, she did not deny herself in front of Jia Baoyu.

After all, poetry and music are the manifestation of talent, and she is not inferior to Jia Baoyu, she thinks.

In fact, although Jia Baoyu is gifted and almost unforgettable, after all, he has only been studying the mainstream culture of this era for three years, and he can barely catch up with Daiyu, the leader of the times, and a few others, still rely on his talent and the personal teaching of several literary masters......

By the way, there are also the additions of those amazing poems copied by the text, which made Daiyu and others a little convinced of him.

"Okay, don't praise you one by one, I'm going to blush if I praise again......"

Following Xiangyun's exploration of spring, welcoming spring and cherishing spring is naturally full of praise, expressing his admiration one after another, seeing that Xiangyun's plan to row a boat and pick lotus pods is about to become his praise conference, Jia Baoyu had to wave his hand to stop.

When everyone came back to their senses, they realized that the boat had been floating in the middle of the stream for a long time without moving.

Just as he was about to ask the two maids holding the oars to move, he saw Wang Xifeng coming over on the case, and said with a smile from afar: "If you don't swim back, the old lady will also take a boat!" ”

When everyone heard this, they hurriedly beckoned and rowed back.

As soon as he got close to the shore, Li Kun smiled at Wang Xifeng and said, "Don't you know that Baoyu taught them a fun trick before, and the little girls were confused, and the boat couldn't row, so we sat in the middle for a long time." ”

Wang Xifeng glanced at Jia Baoyu and said with a smile: "He naturally has a lot of tricks, but you are the eldest sister-in-law, the old lady called you to watch their sisters, you are good, just sit and listen to him." The drama he said was really so interesting, can you be fascinated by your sister-in-law, and even the little girl can't command it? ”

Li Kun stopped talking and beckoned everyone to get off the boat.

The other boat was the personal maid of the people, and they also came down at this time.

Although they also saw Jia Baoyu and others laughing, after all, they couldn't really hear it from a distance, so they weren't fascinated, but each of them carefully picked two lotus pods.

When they got off the boat at this time, they all came up to offer their masters.

The attacker also picked it up, and asked Jia Baoyu if he wanted it.

Jia Baoyu glanced at it and said, "I'll just eat what they picked, and you will send someone to Miss Li to send it over......

When the attacker heard this, he obediently wrapped himself in a handkerchief.

Jia Baoyu cares about Li Ling, but she is not jealous. After all, that shows that the concubine still has a status in Jia Baoyu's heart.

Moreover, the other party has no conflict of interest with her, and there is no ...... for the time being

"Didn't you like to take Xiangling's girl out in the past, why did you change it to her today?"

When you get off the boat, there are many people, and it is inevitable that you will be crowded in one place.

Li Kun wanted to beckon everyone to go, but Wang Xifeng asked Jia Baoyu.

Jia Baoyu glanced at her and was about to speak.

The attacker said first: "Xiangling is not feeling well today and is resting in the house, so she didn't come." ”

The body is not feeling well, it is a perfunctory panacea, and the attacker thinks that there is no problem with this explanation.

Indeed, Daiyu and the other sisters didn't feel anything.

But Wang Xifeng's eyes immediately became teasing.

Even Li Kun turned his head.

These two are young women......

"Not feeling well? I saw her yesterday, she is in good health, why is she uncomfortable in the morning and uncomfortable in the evening, but as soon as this master comes back, she is uncomfortable?

Is it Baoyu, could it be that you slept and tossed at night, so the person who hurt him kicked the quilt at night and got cold? ”

Wang Xifeng said with a meaningful smile.

Li Kun glanced at her, didn't say anything, pretended not to hear, and evacuated the crowd.

The road is narrow, and a dozen people are crowded together, which is easy to bump over.

"Look at what the second sister-in-law means, I have to ask about sleeping at night? Why don't I ask them to write a detailed description in the future and report it to my second sister-in-law every day? ”

In the face of this kind of plausible joke, it is useless to explain it, and it is the best policy to fight against the army.

"Where, how dare I ask you about the things in the house, but casually, what are you nervous about." Sure enough, Wang Xifeng didn't have much to say, pursed his lips, and walked away with a smile.

The other sisters didn't say much.

Maybe they can hear some off-string sounds, but they are different from Wang Xifeng after all. What happened in my brother's house, how could they put their beaks in their mouths?

Even if you understand, you can only pretend not to know.