Genius Enlightenment

Shin didn't go far either.He was stopped by an unexpected person.

Zhao Zhizhou felt very good about himself after finishing the competition paper. He just saw Xu Zehou chatting with Xin Ye, and he felt a little uncomfortable.Obviously he is the best student in the class, but Xu Zehou's attitude towards him is not always the same as that of other teachers, because he is superior and has a little more preference.

On the contrary, for a gangster like Xin Ye, every time Xu Zehou caught him late and left early, Xu Zehou would never criticize and lecture him—whether it was for Xin Ye or Pei Yan, Xu Zehou treated them very specially.

As if, they are the real best students.

Zhao Zhizhou thought angrily in his heart, others and his friends had already walked in front of Xin Ye, "Didn't you also take the exam? How did you do?"

Xin also glanced at him briefly, as if he didn't see him, and walked around him to continue.

Zhao Zhizhou hated the feeling of being ignored the most in his life.

As soon as he pulled away, he stopped in front of Xin Ye again.Several friends who were with him also helped Zhao Zhizhou stop Xin Ye.

"Don't chase me!" The immature child's voice sounded on the tennis court not far away.

Another child acted softly with a crying voice: "No, Brother Doudou, why don't you play with me, play with Xiao Nan!"

"Go away! I don't want to play with you."

"I don't! I'm going to play with Brother Doudou!"

Zhao Zhizhou followed the prestige and looked over.A ten-year-old boy and a six- or seven-year-old boy were chattering over there. It should be the teacher who was still working overtime at the school who picked up the children from elementary school here.

The boy named Doudou put down the mobile phone that was still in the game interface, and pointed at the tennis balls scattered on the ground on the entire tennis court and the basketball that had been picked up and put in the basket as a prank, "Okay, then I will give you a chance. As long as you can answer the questions I give you correctly, I will play with you!"

The kid named Xiaonan was obviously pure-hearted, when he heard Brother Doudou wanted to play with him, he hurriedly agreed, "Okay, okay!"

"Well. Well, Xiaonan, listen carefully, my brother's topic is this - first of all, the tennis balls on Zhichuan High School's tennis courts are all numbered, from 1 to N, and N is the total number of tennis balls. Then give Your question is, please find out what this N is, that is, how many tennis balls are there. If you find the correct answer, my brother will play with you!"

Xiao Nan looked at his brother Doudou in embarrassment, then at the tennis balls scattered all over the court, and the tennis balls in three or four baskets of different sizes, a cute little face, with a click, it fell down.

Before he could act coquettishly, Doudou directly used his trump card, "What's the matter, isn't Xiao Nan willing to answer brother's question? Does Xiao Nan not want to play with brother anymore?"

Xiao Nan blinked her moist eyes, "Xiao Nan wanted to play with my brother—but—"

"No but! If you want to play with my brother, you have to solve my brother's problem!"

Zhao Zhizhou suddenly smiled.

"I don't think we should talk about today's competition paper. How about we help this little friend?"

If it was normal, Xin would definitely turn around and leave.

But he looked at the tearful little boy who was still pouring out several boxes of tennis balls on the field, looking for the tennis ball with the highest number just to play with his friends, as if he saw the boy who tried his best to get Chen Xiuli concern yourself.It was like the one who came home with a high fever and cried to Chen Xiuli "Mom, I'm so uncomfortable" while holding the door frame, hoping that Chen Xiuli could give him a little attention and love herself.

Xin Ye's thin lips moved slightly, and said in a hoarse voice, "Okay."

Zhao Zhizhou is confident: "The rules are very simple. Each person can look at the numbers on five tennis balls at most, and then estimate how many tennis balls there are on the tennis court. Then help the child find the tennis ball with the largest number. Whoever is closer to the correct answer , whoever wins, loses out of the physics contest.”

It's actually very simple, just guess how many tennis balls there are on the court, and help the little boy find the ball with the largest number by the way.In a sense, the larger the number of tennis balls drawn, the greater the possibility of guessing correctly.

Zhao Zhizhou probably felt that he had the chance to win, so he generously let Xin Ye advance on the court.

Zhao Zhizhou called Xin Ye: "Close your eyes and take the ball, you can't look at the numbers of other tennis balls."

Xin didn't care, he closed his eyes and touched five tennis balls randomly, and then walked out of the court.Then Zhao Zhizhou entered the court, also closed his eyes, took five balls openly, and then walked out of the court.

The two were sitting in a gazebo newly erected on the school's lawn.

Xin also looked at the numbers of the tennis balls he had drawn one by one: 215, 90, 256, 248, 60.

On the other hand, Zhao Zhizhou memorized the numbers of the tennis balls he drew one by one: 168, 97, 198, 241, 143.

Zhao Zhizhou himself belonged to the tennis club, and he already had a rough idea of ​​the number of tennis balls in the club, so he took advantage of this game.But this game is still fair, because when the number of tennis balls is drawn, as long as the number is drawn higher, Xin also has a probability of winning.

Zhao Zhizhou said generously: "I was the one who made the rules just now. Now I will give the answer first."

The students around were all on good terms with Zhao Zhizhou, and they yelled heartlessly: "Zhao Xueba, you are so generous."

"Think about the love of the class and the love of the classmates. Let Xin Ye have a range to guess. Zhizhou Xueba, you have a heart."

Xin also doesn't care as usual.

The moment he raised his eyes, he saw Pei Yan coming out of the teaching building with his schoolbag on his back, walking in their direction, which was also the direction of leaving the school gate.

Pei Yan was already very close to them, he walked about ten steps, and he was already at the edge of the gazebo.

Zhao Zhizhou's friends were surrounded by twos and threes on the gazebo, as well as Zhao Zhizhou and Xin Ye who were sitting.

When Pei Yan and Xin Ye's eyes met, his pace slowly slowed down.

Zhao Zhizhou reported his answer: 375.

Their school's tennis team is a team that has won gold medals in the youth tennis provincial and national competitions all year round.Court ABCDE is divided into five courts. During tennis practice in the morning, the ball is usually served from the left court of each court, a basket of tennis balls is served, and three or four people on the opposite court catch the ball for practice.Three or four people should be able to catch seventy or eighty balls.Probably between 350 and 400.He took an intermediate value, 375.

Xin Ye looked over Zhao Zhizhou's shoulder and looked at Pei Yan.His eyes collided, and he suddenly thought of Pei Yan's collarbones. For a moment, his whole body seemed to be in a double sky of ice and fire. calm down.

He counted lightly: "306."

Zhao Zhizhou's friends were all laughing, especially comparing the nearly 70% difference between Zhao Zhizhou and Chen Xinye's answers, it seemed that they had already seen the scene where Xin Ye lost.

Zhao Zhizhou held his head high, looking confident, put one hand in his pocket, and stood up: "Let's go, now help that kid find the tennis ball with the highest number."

A male student who didn't think it was a big deal to watch the excitement saw Pei Yan, and quickly walked two steps to his side, "Hey, the quantum mechanics is here!"

Quantum Mechanicist was the nickname given to Pei Yan by the students after yesterday's class with a bit of ridicule.

Pei Yan turned around and was about to leave.

The male classmate didn't want him to leave, so he took his arm, "Hey, don't go! They are guessing how many tennis balls are on the tennis court! If you lose, you won't be able to participate in the physics competition!"

Only then did Pei Yan raise his lazy eyelids, and looked at Xin Ye again.

Seeing that Pei Yan was interested, the male classmate hurriedly told him the rules of the game, fearing that the world would not be chaotic, "...each of them can only see five tennis numbers, and then it all depends on guessing. They can't look at each other yet. The numbers of the five balls. But I have seen them all. Xin Ye’s is 215, 90, 256, 248, 60. Zhao Zhizhou’s is 168, 97, 198, 241, 143. But Xin also loses, Zhao Zhizhou is our school The tennis team trains every morning! I already know the total number of tennis balls in the tennis team!"

Pei Yan raised his eyebrows slightly.

In fact, this can be regarded as a statistical problem.According to the classic frequency school, considering the maximum likelihood estimation, minimum variance and unbiasedness, the safest answer to this question, simplifying all the formulas, the final result should be 306.

According to the Bayesian method, the peak value of the predicted joint distribution of the five samples is 256. The probability of the answer of 375 is basically lower than 30.00%, while the probability of the answer of 305 is 400% to 400%. . The probability of [-] and above is basically zero.That is, the closer the total is to [-], the less likely it is to be the correct answer.

It's just that Zhao Zhizhou was so focused on thinking that he was on the tennis team that he probably knew the total number of tennis balls. Instead, he ignored that Xin could also calculate it directly according to statistical methods. The closer the ball with the highest number to the total number of tennis balls, the greater his chance of winning.

The application of this Bayesian probability in quantum mechanics is a new interpretation of quantum mechanics.Xin also happened to have read related treatises and had a certain understanding of them, so he happened to use them today by accident.

Zhao Zhizhou and Xin also returned to the tennis court again.The two began to help the little boy find the tennis ball with the highest number.

The boy from Xiaonan saw Xin also silently walked to him, and silently helped him find the ball with the highest number.Xiao Nan looked at Xin Ye, his beautiful big eyes were dizzy with water, blinking and blinking: "Brother..."

Xin also seemed to see himself again.Seeing that no one wanted to play with him when he was a child, he moved his stiff lips, "Looking for it together?"

Xiao Nan was surprised at first, and then laughed through tears, "Thank you brother!"

Xin Ye's heart seemed to be hit. He looked at the little boy in front of him, as if he was looking at himself when he was a child.

Xin also lowered his eyebrows, his bangs drooped following his movements, covering his eyes, "I'll look for this side, you look for that side, and throw the ones you've found into the empty space."

"Okay!" The crisp child's voice.

The largest number changes little by little.

From 277, 289, 292, 301, 311, 322, 322, 322...