Entertaining Children

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Yan Ke and others are all students of MIT, live in the school dormitory, and are not looking for another place to live. Although it is summer vacation, there are many vacancies in the dormitory, but the beds in American university dormitories are relatively private, and unpopular friends come to stay in the dormitory, Xiao Yao naturally will not squeeze the dormitory with them.

Cambridge is a well-known university town with all kinds of basic supporting facilities. There are many hotels in the city and the environment is quite good. Xiao Yao had already booked the hotel in advance before coming.

Xiao Yao took a flight for about 20 hours, and tomorrow he will meet with the card counting team. Naturally, there will be no program arranged in the evening. After Yan Ke and others sent Xiao Yao to the hotel to check in, they treated Xiao Yao to a meal, told him to take a good rest, and left.

The next morning, the three of Yan Ke came to the hotel to pick up Xiao Yao, and went to the MIT campus to meet with the rest of the card counting team.

The card counting group is not a student association recognized by the school at MIT. It can only be regarded as an unofficial secret organization at most. However, MIT has very rich hardware resources, and it is still easy for students to find a few classrooms as activities. Xiao Yao met with the members of Yan Ke's card counting team in a relatively remote classroom on the MIT campus.

There are a total of seven members in this card-counting team, except Yan Ke and three other members. When the three of Yan Ke arrived with Xiao Yao, the four members were already waiting in the classroom. After the meeting, Yan Ke introduced Xiao Yao and the four of them to each other.

The sex of these four people is three men and one woman. Judging from the skin color and appearance, the three boys are a Caucasian Caucasian, a South American Latino, and an Indian, and the girl looks like a mixed race of East Asian and European Latino.

Xiao Yao came to the card counting group to learn the card counting method, which is actually an act of "picking peaches". In order to persuade the other four to agree to Xiao Yao's coming to "pick peaches", the three of Yan Ke would naturally introduce Xiao Yao's situation to the four in advance. However, Xiao Yao came to learn card counting, not to hold a fan meeting. When Yan Ke and the three introduced Xiao Yao, they focused on Xiao Yao's mathematical skills and relationship with them, not Xiao Yao's identity. .

The three of Yan Ke said that Xiao Yao was a roommate they met when they participated in the training of the China Olympiad national team in middle school. Those who can enter the China Olympiad national team for training, naturally have good math skills. When Yan Ke and the three joined the card counting team, they already had certain research results, and the reason why they started to study the mathematical models and methods of card counting very early was also proposed by Xiao Yao, so they brought in the card counting team. The results of the group are also due to Xiao Yao's contribution, and they also agreed to go to the casino together to experience playing blackjack with card counting.

The card counting team agreed with Xiao Yao to learn card counting mainly because of these two reasons. The three of Yan Ke didn't think that Xiao Yao's celebrity status would help this matter, and they didn't even mention it to the four people in the card counting team.

During this meeting, when introducing each other to the two parties, Yan Ke and the three also did not deliberately mention Xiao Yao's star status.

However, Xiao Yao is also well-known in the United States. The fact that the three of Yan Ke did not mention it does not mean that the other four will not recognize Xiao Yaolai.

After greeting each other, the mixed-race girl stared at Xiao Yao for a while, and suddenly asked, "Xiao Yao? Is your English name Yang? Are you a member of the "Immortals" band? The one who participated in the Eva Show and the Quanzhou The Chinese star of the Star Celebrity Tournament?"

"It's me!" Xiao Yao nodded with a smile, "But I have already quit "Immortals", and I am no longer a member of the band."

"Haven't Dean and the others issued a statement that I have quit the band?" Xiao Yao said in his heart.

Recently, he has been quite busy, so Xiao Yao didn't pay attention to the news in this regard. But for this kind of thing, it is enough for Xiao Yao, Dean and others to express their attitude. Even if they haven't made a statement, Xiao Yao will not press. At this moment, I just muttered in my heart.

"Oh, my God!" The girl named Sandra said to Yan Ke and others, "Why didn't you tell me that your friend is a big star in China?"

"Does it matter?" Yan Ke spread his hands and smiled, "We let him learn card counting because he can learn it in a short time and do it well, it has nothing to do with whether he is a star or not!"

"That's right!" said the white boy named Taylor in the card counting group, "Our card counting group teaches him to count cards, and it has nothing to do with whether he is a star or not!"

"Yang, can I ask which school and major you studied in university?" Taylor turned to Xiao Yao and asked.

"Ty, why are you asking this?" Sandra asked Tyler. "Are you trying to show your superiority as an MIT student?"

"Of course not." Taylor said to Sandra, "I'm just a little worried about his ability in mathematics."

"Yan told us that Yang once participated in the training and selection of the Chinese Olympiad national team, and got a perfect score in mathematics in the Chinese SAT test!" Sandra said, "Do you think they are lying to us?"

"No, I believe in Yan!" Taylor said, "However, maybe Yang was a math genius like Yan in middle school, but genius also needs to be learned. Members of the "Immortals" band, who can go to the Eva Show and the Masters He is an entertainer, a star, and I don’t think a well-known entertainment star can spend much time on the study and research of mathematics. He is a well-known star in the United States, which means His playing in a band is not a hobby, but a career!"

"It seems to make sense!" Sandra thought for a while, then nodded slightly.

"Can you answer my question?" Seeing that Sandra had stopped talking, Taylor turned around and asked Xiao Yao again.

"First of all, let me correct you. I'm not just a band member, I'm also a professional actor and director." Xiao Yao said with a smile, "I'll answer your question later. I studied at Huaxia's Shencheng Drama Academy as a university student. A professional film and television school, my major is the Department of Acting! I am currently a dual-degree graduate student in the Department of Directing and Acting at the Huaxia Yanjing Film Academy. As you can tell from the name, it is still a professional film and television school, and the major is also It’s still about film and television.”

"Does Huaxia's film and television colleges and your film and television major need to learn mathematics?" Taylor asked again.

"No need!" Xiao Yao shook his head and said, "My undergraduate and master's majors are both art, and there are no courses related to mathematics!"

"Ah~" When Xiao Yao said this, the four non-Huaxia members of the card counting team all showed surprise and disappointment.

"Thank you for your frankness!" Taylor nodded to Xiao Yao, "but I'm sorry..."

"Wait!" Knowing what Taylor wanted to say, Yan Ke interrupted aloud.

"Yan~" Taylor looked at Yan Ke with some dissatisfaction in his eyes.

Of course, Taylor would be dissatisfied with Yan Ke and the three of them. But what he was more dissatisfied with than Yan Ke interrupting him was that when Yan Ke and the three introduced Xiao Yao's situation to them, they didn't mention Xiao Yao's recent situation at all, and concealed it from the four of them.

The four of them heard Yan Ke and the three say that Xiao Yao participated in the training of the Huaxia Mathematical Olympiad national team with them, and that Huaxia SAT mathematics got a perfect score, and the total score was the first in the city, so they took it for granted that Xiao Yao was a He is a mathematical genius, and like them, he continues to develop in the direction of science and engineering. Even if he didn't come to MIT like them, most of them were studying at Shuimu University in China or a prestigious school in other countries. Unexpectedly, this person went to study art and didn't study mathematics at all in four or five years.

"Taylor," Yan Ke ignored the dissatisfaction in Taylor's eyes, and smiled, "Now our card counting model has been made. Yang is here to learn card counting, not to help us study how to count cards. We don't need to tell What kind of mathematical principles does he use for card counting, as long as he memorizes those calculation formulas and tells him how to calculate and how to do it. So even if Yang didn't study advanced mathematics knowledge in college, he can still learn card counting. "

"But," Taylor said.

"I know!" Yan Ke waved his hand again and interrupted Taylor, "What is the basis of card counting? First, it requires a strong memory to remember the cards used. Second, a strong mental arithmetic ability , Calculate the probability of the size of the next card through the formula, and make the most beneficial choice from the probability. Memory and mental arithmetic ability, the reason for talent, can also be improved through acquired training. We are both talented, He did a lot of exercise the day after tomorrow. Even if Yang does less exercise the day after tomorrow, if his talent is high enough, he will still be no worse than us!"

"What did you say? Talent?" Taylor said.

"Yes," Yan Ke said with a smile, "we all consider ourselves geniuses, math geniuses, but Yang is our even more talented genius! We knew Yang from the Huaxia Mathematical Olympiad training team in high school, and Yang was younger than us at that time , but he is stronger than the three of us in memory and mental arithmetic, and much stronger. Even though Yang has not studied mathematics and practiced in recent years, he is very talented in these two areas. We believe that his two abilities Still better than us!"

"Is it possible?" Taylor asked in disbelief.

"Is this the case? Don't we know if we test it?" Yan Ke said, "We have agreed to train and assess Yang before. Now that Yang has come to the United States from China, we can't just do nothing. Just let him go back?"

"What do you think?" Taylor turned around and asked the other three non-Huaxia members.

Yan Ke, the three Huaxia people have always been on the same side. Looking at the expressions of Chen Jiwei and Yu Gang, it is obvious that they both have the same idea. Taylor felt that there was no need to ask, so he only asked the other three non-Huaxia members.

"I think Jan should try it!" Sandra said first.

"Anyway, we're already here, and we don't have any plans for today," the South American Latino named Sam took out a pack of playing cards from his pocket and shrugged, "It's okay to play!"

The Indian boy named Raj looked more introverted, didn't speak, just nodded.

"Okay!" Seeing that everyone agreed, Taylor nodded and said, "Sam, you come to test, first test his ability to memorize cards!"

"OK!" Sam nodded, put the two desks together, stood on one side of the desk, pointed to the other side and said to Xiao Yao, "Please sit down!"

Xiao Yao smiled, moved a chair and sat in the middle of one side of the two put together desks. Naturally, the rest of the group stood by the table and watched.

"I have a pack of playing cards in my hand now," Sam said to Xiao Yao while unpacking the playing cards in his hand, "I will shuffle the cards first, disperse all the playing cards in order, and then deal the cards according to the blackjack table in the casino The speed rhythm of dealing cards. We count as four players plus one croupier, not counting cards, ten cards are dealt each time, and then buckled. You must tell what these ten cards are all, and then play the first Two rounds, or ten cards, after the deduction, you can talk. Fifty-two cards can be played for five rounds, as long as you can answer all of them correctly, this test will be considered passed. "

"Do the suits and points have to be all correct?" Xiao Yao asked.

"It's better like this!" Sam thought for a while, and said, "But if you can't remember the suit, you can remember how many times a certain point appears!"

"Wait!" This time it was Yu Gang who said, "This is too difficult! We have a way of counting cards, let alone memorizing suits, we don't even need to memorize the points so clearly! We use certain points as A code is put together to remember..."

"Stop!" Xiao Yao said to Gang, "I haven't passed the test yet, so don't tell me your card counting method! In the casino, there are five or six decks of cards together, and in many cases there are more than four players on a table. Now Sam only tests me with one deck of cards according to the situation of four players, which can be regarded as lowering the standard, and I am willing to accept this level of challenge!"

"OK!" Sam took out the big and small kings and threw them away, shuffled the remaining cards, and then began to deal the cards.

Sam dealt the cards according to the rules of blackjack. First distributed four in front of Xiao Yao, then one in front of himself, and then one in each of the five positions. Except for the first card in front of him which was held down, all the other cards were revealed directly. After all ten cards were dealt, Sam first revealed the card that was buckled in front of him, and showed it to Xiao Yao separately, made a gesture, and then buckled all ten cards in turn.

"Taylor, put away the cards and check them out!" Sam pointed to the ten folded cards on the table and said to Taylor.

Taylor understood what Sam meant, and reached for the cards on the table.

"Wait!" Xiao Yao grabbed Taylor's hand that was reaching for the poker cards on the table.

"What's wrong?" Both Sam and Taylor looked at Xiao Yao curiously.

"I want to increase the difficulty!" Xiao Yao laughed, "I don't just memorize the cards, but also their positions."

"Here!" Xiao Yao stretched out his hand and tapped the two folded cards on the far left of himself, "Three of Diamonds and Ten of Spades!"

Taylor reached out and picked up the two cards on the far left of Xiao Yao, looked at them, and nodded.

"Here, the six of clubs and the Q of hearts, here, the nine of spades and the eight of hearts..." Xiao Yao clicked in turn, and finally pointed to the two cards in front of Sam, "The last is in front of you, Sam, the two Jacks, which are Spades and Hearts!"

Sam picked up the two cards in front of him, looked at them, and nodded.

All guesses were correct in the first round, but the card counting team didn't show any overly surprised expressions. After all, there are only ten cards, and any of them can do it. Even if Xiao Yao made the suit and position more difficult, it was not impossible for them. The key is whether Xiao Yao can still remember after there are more cards in the back.

Putting the two cards in his hand in front of him, Sam looked at Xiao Yao and said, "Originally, I planned to put away all the used cards, and then randomly ask you if a certain point has appeared in the next few rounds." For the number of times, since you want to increase the difficulty yourself, I will not accept these cards. Later, I will not only ask about the number of times a certain point appears, but also about the pile of cards that have been used in a certain position. Maybe that pile of cards Is there a card of a certain rank and suit in the pile, and it may also allow you to tell the rank and suit of all the cards in that pile, can you do it?"

Sam did this to further escalate the difficulty of the test, and it was getting farther and farther away from the requirements of card counting. However, after Xiao Yao took the initiative to upgrade the difficulty for the first time, Yan Ke and others no longer wanted to help Xiao Yao speak out.

"I don't know, but I'm willing to give it a try!" Sure enough, Xiao Yao didn't refuse, and nodded with a smile.