You can't imagine that there is such a large flow of money hidden in such a market alley. - Well, only casinos have such "courage".

The house is not detached, it is one of the long buildings in a row. I don't know which generation of ancestors of this family surnamed Yu built this row of long buildings, because the archway is mottled and hung with "Yu House". The long building faces south, divided into seven units, three in the east, three in the west, and the middle one is a public activity place, called "in front of the hall", which should be the place where the ancestral tablet and sacrifice are placed. The small casino is the first to the west of the "Tangmao", and the entrance and exit gateway must pass through the "Tangmao". Judging from the layout, it should be the most important unit in this row of buildings, and it is estimated that at the beginning of the construction of the building, it belongs to the eldest son and the big house.

It turned out that Hu Yuyan temporarily set up such a small casino in Shanghai, which was open on weekends. He told Xue Yinhe that it was not a temporary shortage of manpower here, and he would not bring her. Xue Yinhe has already come and doesn't want to argue with him, their essential relationship is "employer and long-term worker", more hypocrisy.

It's just that Xue Yinhe didn't expect that this time she didn't come to clean her old business, she raised the file and asked her to be the dealer dealer.

still put on a mask for her, put on the old Shanghai cheongsam, the striped cheongsam is simple and not simple, concave and convex, charming posture, really, even the back is so good-looking!

Just one table, gambling money in and out of tens of millions,

Play at 21 points.

Xue Yinhe is studying mathematics, and she can actually tell you with super professional mathematical knowledge: 21 o'clock is actually the easiest game to be bullied by mathematicians!

She also spent a lot of time in the small casino during that time, and she saw all the cold and the routines.

As a science tyrant, and out of her strong curiosity, she swept the teaching building and also specialized in 21 points:

In 1931, the state of Nevada in the United States announced the legalization of gambling, and began to appear publicly in gambling clubs at 21 o'clock, becoming the most popular dealer game after dice games.

The reason why 21 is said to be the easiest game to win in the casino is because players have a 49% win rate when they have the best strategy. And the best strategy is not difficult to master, in fact, it is "calculating probability".

Assuming that the player's initial card value is 12 points and the dealer's face up card is 7, the winning rate of the two options of taking a card and ending a card is calculated.

For example, when you choose to Stand, there is only one way to win:

Dealer busts, set probability of P(S)

The dealer's other card has 13 possibilities, and the probability is calculated as follows

F (T+7), the dealer does not draw the card then does not bust, do not consider

(T stands for 10, J, Q, K)

F(9+7), draw 6~T then bust, F(9+7)=8/13

......

And so on, the final P(S)=∑F=0.26231

Okay, we math idiots can't understand their brains, but Xue Yinhe can definitely calculate well, but fortunately, she is not good at this, or she will take risks to make a lot of money, but it will make people anxious.

At halftime, Snow Galaxy was led to the first room on the east side to drink water and rest.

In addition to Hu Yuyan, Xu Qun is also there,

Seeing that they were all acquaintances, Xue Yinhe took off his mask and took the warm water cup handed over by Xu Qun, which was soaked in all kinds of health and fire cleaning things, wolfberries, honeysuckle, and chrysanthemums. She walked to the side of the sofa and took a sip of tea and closed her eyes, too lazy to listen to him talk about the gamblers at the table.

In her eyes, these are all big fools, what are you betting on, can you bet on the dealer?

Or speak with math:

Take an example of a bettor betting on odd and even:

Every time you bet on odds and evens, if the banker's odds are 2. The correct bet can win 1 (the specific amount is not said here, 1 is a unit), and the wrong bet loses 1. Each draw is randomized and the probability is 50% for each bet. The expected value of each bet is 0. Gamblers here are betting on luck, if they are lucky, they can win, and if they are unlucky, they will lose, but it does not change the nature of the expectation value of 0.

Every time a gambler makes a bet, he is actually gambling with a bookmaker or casino. Each bet has a 50% probability of winning or losing. In actual gambling, the gambler's funds are limited, and when he encounters a losing streak, he cannot resist the risk of losing, while the banker's or gambling funds, for the average gambler, can be considered unlimited and can resist the risk of losing continuously.

So, a gambler, you can't take down the dealer or gamble, and it can eat up your limited bankroll. In addition, almost all games are set up with "rake", this mechanism seems to be nothing if it is a few rounds, but the number of bets is more, and its effect is reflected. Assuming that the "rake" is set to 1% in a round, the rake in 100 rounds is the gambler's principal.

After Hu Yuyan and Xu Qun finished talking about business, they saw that she was crooked and seemed to be about to fall asleep, walked over, sat on the armrest of the sofa, and pushed her shoulder, "Eh, I just saw you talking about something when you were dealing cards,"

It was Xue Yinhe, who was a little squinted, opened his hand, "I didn't say anything,"

The more she is like this, the more Hu Yuyan wants to tease her, and she has to tell her to squint steadily, "Tell me," squeaked her face,

Xue Yinhe didn't open his eyes, people were indeed a little annoyed, and he muttered a lot,

"I'm calculating the probability, the dealer busts, the player does not burst, the dealer players do not bust, but the player is greater, let the probability be P (H), the probability of the bust is the same, but you have to count the player's situation, that is, (1-4/13). If you don't bust to win, there are the following possibilities: the player gets 21 points, and the dealer gets 20~17 points......"

Hu Yuyan glanced at Xu Qun in obvious surprise,

Xu Qun also smiled and nodded, indicating that she had analyzed correctly.

Hu Yuyan pulled her face, "It seems that I really can't ask you to gamble at the poker table!" At this time, Xue Yinhe narrowed his eyes and looked at him, "I'm not that stupid, I was played by you." He closed his eyes again. Hu Yuyan bent down to her ear and smiled, "You pumped a lot of water today." Snow Galaxy stretched out a hand and slapped it upward, "I still want cash." ”

Who knew that Hu Yuyan came up with one hand and interlocked her fingers, "No problem." Give you what you want. ”

Xue Yinhe sneered in his heart, hum, you see that he is happy at this moment, his mouth is like smearing honey, because he earns more!!

Okay, if there's a long lens that pulls up,

The mysterious Ye in the small alley is not so eye-catching in the background of the big Shanghai in the whole lantern.

But

Bold, let's go up again, even to outer space,

There's a satellite watching over this little alley!

Every room, every hallway, every person's every move, is clear.

Thousands of miles away,

Qi Zui looked at the cheongsam beauty who dealt cards like a robot in front of the card table just now on the screen, and now, the woman who was lying on the small sofa and talking to Hu Yuyan in a whisper,

Qi Zuiguaner,

She's a real surprise.