Before the first round of the game ended, the teachers in the Grade 9 office received the news.
"...Teacher Ma, this is what happened."
After Chen Chu finished his respectful report, Ma Pingping was furious. She pushed the swivel chair away and stood up suddenly. Because of the large amplitude of the movement, the swivel chair collided with the desk behind it, making a loud "clang" sound.
All the teachers in the office were shocked. Li Shu put down her pen and hadn't recovered from the shock yet. Teacher Ma disagreed, so he went to Class 1 to find someone to play 21 points? Lin Chaoxi was being too noisy.
"Teacher Li, what's wrong with your classmates? They don't study hard themselves, and they are affecting their class?" Li Shu walked directly to her desk and questioned.
"What kind of tactic is this?" Li Shu muttered.
"Teacher Li!" Ma Pingping yelled.
"Teacher Ma, don't be angry." Li Shu stood up and said, "Let's go and take a look."
——
"The four cards you have now are 2, 7, 5, and 6, which totals 20. Unless you draw an A, you will definitely lose. Are you sure you still want it?" Lin Chaoxi asked.
"want."
"Please don't mislead others!" Lin Chaoxi was shocked. "My current cards are x, 2, 3, 3. There is a rule in 21 points that the dealer must keep taking cards until 17 before he has the right to choose whether to stop. I can tell you in advance that my points are not 17, so I will take down a card. In this case, your best strategy is not to do it, because you already have 20, and you have a great chance of winning."
"It's a trial without any bets, so just go with it."
"After so many years of fighting, you lost to me directly. Is your self-esteem okay?"
"Will my self-esteem be alright if I change my words temporarily?"
Lin Chaoxi felt that what Zhang Liang said made sense, so he stopped arguing with him and continued teaching him blackjack.
"After removing the queens, there are now 52 cards in total, and there are 8 cards on the board, so there are 52-8=44 cards left. The probability that Zhang Liang will not explode is the probability that the next card will be an A, which is..."
A boy next to "4/44" answered, "Less than 10 percent."
"No." Another girl retorted, "Then Lin Chaoxi's hidden card could also be an A, so it should be between 3/44 and 4/44?"
"6.8%-9%, the probability that the fifth card is an A." Zhang Liang said, "Deal the cards."
These last words were what Li Shu and Ma Pingping heard when they walked to the door of Class 1.
In the corridor, students surrounded the two people who were playing blackjack. After a brief argument, Lin Chaoxi dealt a card to Zhang Liang, and then it was her turn to choose whether to continue.
Everyone held their breath, waiting for her decision, so the atmosphere in the entire corridor was unusually quiet.
"What are you doing!" Ma Pingping shouted, "Stop studying. What are you doing here?"
The students were startled and trembled as if they had received an electric shock.
Ma Pingping separated the students and walked up to Lin Chaoxi: "Who allowed you to gamble in front of our class? Come with me to the Moral Education Department later!"
"Is this gambling?" Zhang Liang asked.
Ma Pingping: "Zhang Liang, look at what you are like now. The teacher is very disappointed in you."
Lin Zhaoxi looked up and said, "Teacher Ma, one of the definitions of gambling is that you need to use something of value as a stake. Do we have any bets?"
"How come you don't even have any chips?" Zhang Liang was very dissatisfied.
The boys and girls sang the same tune, and Ma Pingping's face turned pale, looking extremely ugly.
Chen Chu: "Zhang Liang and Lin Chaoxi, you are just making excuses."
"What does it have to do with you?" Zhang Liang said disdainfully, "A flatterer."
Ma Pingping's last name is Ma, so... Zhang Liang doesn't even take the teacher seriously. This kid is even more arrogant than when he was a child.
"Zhang Liang!" Ma Pingping raised her voice.
"Mr. Ma, the bell hasn't rung yet. It's free time. Why can't I play blackjack here?"
Chen Chu: "But 21 is..."
"I've just said it, there's no bet, please understand." Zhang Liang said.
"Are you the teacher or am I the teacher? I told you not to play. Don't you have ears?"
As if she could no longer endure it, Ma Pingping's scolding echoed throughout the corridor, and the surroundings suddenly became quiet.
The students in Class 1 looked at their homeroom teacher with fear and doubt in their eyes, but the one who took the most action stood up directly.
Zhang Liang put his hands in his pockets and turned away.
"What are you doing!" Ma Pingping asked.
"Go to the principal's office and ask the principal whether we can play blackjack."
Zhang Liang said this proudly, but he had only taken a few steps when he suddenly stopped.
The grade leader, Mr. Zhang, stopped in front of him and said, "Young man, don't get too excited." The math teacher, who was nearly 50 years old, patted him on the shoulder.
A pair of dirty black leather shoes appeared in front of Lin Chaoxi. She looked up and saw a bald old man.
"Student, what are you doing here?" the old man asked her.
Lin Chaoxi had just seen this little old man in the office. He had clearly listened to everything from beginning to end, but now he asked again, which seemed like he was acting.
"Challenge Class 1." She acted out very cooperatively.
"Why do you want to challenge Class 1 with 21 points?"
"Because Teacher Ma is unwilling to give us regular classes the opportunity to participate in the mathematics league exam, then I can only beat everyone in Class 1 and then prove that it is unfair for Teacher Ma not to give us regular classes a chance." Lin Chaoxi replied.
"That's right. It seems to make sense." Old man Zhang, the grade leader, said, looking at the head teacher of Class 1 who had always been high and mighty.
Ma Pingping: "Teacher Zhang, it is a waste of time for the regular class to take the exam. They should focus on preparing for the high school entrance exam."
"It seems to make sense." Old man Zhang looked at Lin Chaoxi again.
"Takeshi Ma, you are the math teacher of class 1 and you have never taught other classes. Why do you think this is a waste of other classes' time?"
"Then you two can have a fight."
Just as she was about to listen to Ma Pingping's speech, she suddenly heard the old man say this. She was stunned and looked at the smiling teacher in front of her in disbelief.
"As you say, don't make 'value bets'..."
The grade leader has the final say.
“Great!”
"Long live!"
There was a small cheer among the students.
"Teacher Zhang!" Ma Pingping was even more embarrassed. She said angrily, "As the head of the grade, how can you condone such activities!"
"Blackjack is not a simple gambling game. It involves so many simple to complex probability problems, profit calculations, and strategy choices. If children are willing to study it in depth, we teachers should support them, so that we can enrich students' extracurricular life."
“It will affect their studies!”
"Blackjack is also a form of learning. Didn't the principal tell us to find a way to educate students through various means to achieve the goal of combining education with entertainment..."
A grade leader is a grade leader, and his awareness is higher than that of an ordinary class teacher. Lin Chaoxi was stunned when he heard it, and always felt that this charlatan was very similar to the later Old Lin.
Lin Chaoxi was caught by old man Zhang: "Student Lin, when you are doing your challenge, remember to introduce chips, tell other students the rules of 21, the probability calculation algorithm you know, and how to formulate the best strategy, so that you can get to the same level, okay?"
"Ah?" Lin Chaoxi was stunned.
"I mean, let's get started!" said Old Man Zhang.
——
"10 to k are recorded as 10, so there is a 4/13 or 31% chance of getting 10..."
Ma Pingping had already walked away in her high heels. The lunch bell rang and Lin Chaoxi was taken to the first grade classroom to start a new game.
As the banker, she had a hidden card x and a 10 in front of her. She swallowed and was stunned.
The previous round ended with Zhang Liang's explosion, and the situation in the new round immediately reversed. She gritted her teeth and continued to teach.
But before she could finish, the children in Class 1, who were eager to cause trouble, shouted.
"What's that one underneath you?"
"Are you losing?"
Lin Zhaoxi: "You can judge my hole cards by whether I continue to bet, but there is another possibility. If my hole cards are A, a 10 and an A, then I will get black directly, win directly and double my chips."
"What chips?" the students asked.
"I don't have it on hand right now." Lin Chaoxi looked around: "Do you have a lot of the same things that can be used as chips?"
"Buttons?" a boy asked.
"Are you taking off your clothes?" the girl retorted.
"How about bottle caps?" someone else asked. "There are a lot of waste plastic bottles in the garbage corner behind our class that we want to sell for money!"
"It seems possible." Lin Chaoxi replied.
Suddenly, many students from Class 1 of Junior 3 rushed to the back of the classroom and started twisting bottle caps. The sound of eager conversation and the creaking of plastic water bottles came one after another. Bottle caps of different colors were thrown to the ground one by one. Some students even rushed back to their seats and gulped down the water just to collect bottle caps.
Soon, Lin Chaoxi and Zhang Liang were faced with many colorful bottle caps.
Lin Chaoxi: "We use bottle caps as chips to place bets. You can choose to bet on just one or all of them."
“How do I place a bet?”
"What are the odds?"
The atmosphere was lively and students asked questions one after another.
"If you get a hit, you lose 1 to 1, and if you get a Black Jack, you lose 2 to 1. Another rule is that when a player only has two cards in his hand, he has the right to choose to surrender and return half of his chips. When a player gets the fifth card, his chips will be doubled directly." Lin Zhaoxi said.
"But how many bottle caps does each person have?" a classmate asked.
Lin Chaoxi thought about it. This question involved the key points of the competition system, and she couldn't answer it for the time being.
"Each person has 10 bottle caps. If you lose all the bottle caps, you will be eliminated." Pei Zhi added at the end of the classroom.
Zhang Liang turned around and said, "Ten is too fast."
"After all, it's a wheel battle, we have to be quick." Pei Zhi replied.
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