The more you study the subject of mathematics, the more you will discover its magic. It's a pity that Downing's interest in mathematics was not very great at the beginning, and even though his math teacher always said that he was very suitable for mathematics, Downing still didn't like it very much.

However, there was a time when Downing also became interested in mathematics for a while because of the encouragement of his math teacher, and during this time, he accidentally saw a sentence that came in handy today.

Persie Deconnis, a professor of mathematics and statistics at Stanford University in the United States, has shown that there is a natural bias in coin toss. In other words, the probability that the initial upward side will rise again after it is thrown is not 50% of what we previously understood.

It's fifty-one percent.

Although I don't expect this extra percent to allow the senior brother to win this level, it can at least increase the probability of winning for the senior brother.

Senior brother is such a money-eyed person, even if he is told that this one percent is his chance of winning, he will devote himself to it without hesitation.

Gamblers have this mentality, even the slightest chance of winning, he will gamble.

So he took the pounce with a loud voice.

The people around saw the excitement and came to the front. Liu Yier, Aunt Niu, Wang Po and Li Zi also came over and chattered about whether this family, whose identity has been vague so far, will win this fight.

The senior brother gritted his teeth tightly, slowly took out five ingots of silver from his purse and handed them over. The peddler took it with a smile on his face, and handed back ten copper plates.

The senior brother remembered Tang Ning's words, and when he threw out the copper plate, he turned the back side up, and specially confirmed it, and then threw it out.

With a bang, the copper plate fell to the ground. The senior brother looked down and couldn't help but be overjoyed.

"Bare back! It's a bare back! ”

He picked up the copper plate and was as happy as a child.

Downing really had nothing to say, and in a word, it was just the beginning of the nightmare.

There is a 1 in 4 probability of flipping a coin face up twice in a row. That is to say, it has to be lost eight times before such a single occurrence.

Although the peddler didn't think about it in Downing's way, he was the one who made the rules after all, and he must have been scheming. Sure enough, seeing that the senior brother threw out his bare back for the first time, he didn't panic at all, but took the lead in cheering.

"Congratulations to the guest officer, it's a good start!"

A group of people around also coaxed: "Throw it away, keep throwing it away, take advantage of your luck, rush!" ”

The senior brother rushed, and after he made sure that the copper plate in his hand was facing up, he threw the coin out.

"It's bareback again, it's bareback again!"

"Congratulations to this guest officer, there are still four barebacks left, and you can take the villain's things away!"

An exclamation erupted from the surrounding crowd.

Luck is not bad, then the next time you throw a copper plate with the back facing up, the probability is one in eight, and you can only appear once if you throw it twenty-four times.

Tang Ning couldn't help but have some expectations, if Senior Brother could throw the copper plate with the back facing up three times in a row, it would be enough to show that this person was lucky today. If he really threw out six in a row, Tang Ning was going to repair an immortal card for him at home, which was completely the birth of the God of Wealth.

Liu Yier and the others were also very excited to watch the excitement, and when the senior brother threw the copper plate out for the third time, everyone present was silent.

"Bareback!"

Tangning was a little dizzy, and when he was hugged tightly by his senior brother, he still couldn't figure it out, could it be that this person's luck had been so good?

"Aning! You're so good, I haven't thrown one side three times in a row before! Senior brother said excitedly.

Tang Ning scratched his head and said, "This should be your own luck, it has nothing to do with me......"

Win to rush, lose to coward, senior brother is now bursting with self-confidence, extremely inflated.

So the next plot took a sharp turn, and after throwing out four copper plates in a row, the senior brother's face was blacker than the bottom of the pot.

The peddler put away fifty taels of silver and said happily to the expressionless senior brother: "Guest officer, it seems that your luck is not very good today, come back next time."

By the way, the remaining three copper plates will be given to you, and they will be given to you as a souvenir. ”

The senior brother said, I don't accept it.

Tang Ning said that it is useless if you are not convinced, and it is a kind of luck to be able to throw out four heads in a row.

The senior brother said that I still have three pieces left in my hand, and I will throw them away.

Tang Ning patted his senior brother on the shoulder and said, why bother?

The senior brother stopped talking and began to throw copper plates.

Facing up again, Downing grinned. The senior brother trembled and pinched the second one in his hand, and after confirming that the back side was facing up, he threw it out again.

is still facing up, even Liu Yier is a little pitiful of this person.

In the end, the senior brother's eyes were blood-red, he pinched the last copper plate in his hand, took a deep breath, and threw it out again.

It's still positive, and even Tang Ning is dumbfounded.

The senior brother squatted down slowly, picked up the three copper plates and put them in his hand, looked down at the three copper plates, and said nothing.

The princess, who has always been taciturn, couldn't help but say, "Don't forget it......"

"No way!" The senior brother's face was hideous, and his voice was crying: "I don't believe that I can't throw out a single negative one!" ”

As he spoke, he threw out all three copper plates in a row.

Tang Ning looked at the three copper plates on the ground, and felt that he still needed to repair an immortal card for his senior brother. When the time comes, whoever has an enmity with them will secretly hide in someone's house, and maybe there will be various supernatural events in their house the next day.

God knows why a man can throw out the same copper plate ten times in a row.

From a probabilistic point of view, the probability of throwing ten coins of the same face in a row is 1 in 1,000 and 244, and it takes 10,240 consecutive tosses to make such a ......

Senior Brother's expression returned to flat

He squatted down and picked up the three copper plates one by one, blew the ash on them, and then carefully put them into his purse.

Then he turned to Tang Ning and said, "Where is Master's treasure map?" ”

Tang Ning hurriedly said: "When I get home, I will paste your fifty taels of silver to you, and I will paste it to you." ”

"And seven copper plates." Senior brother said expressionlessly.

The story of the senior brother is just a small episode in this shopping, Liu Yier took a fancy to a piece of clothing, and she also used the method of Guan Pu, but she unexpectedly won Guan Pu, and Mei Zizi got this dress in her hands.

Tang Ning went to find plums, just a hot face and a cold buttocks. bought Plum's favorite dessert, and in order to have a cold war with Tang Ning, Plum actually strangled the gluttonous worm to death.

This perseverance even Tang Ning had to pick a thumbs up, and said in his heart that you are a little girl, just take advantage of it now, and wait for tomorrow Brother will give you a New Year's gift, if you don't hang on your brother, Brother will ......

Confessed.

Aunt Niu and Wang Po also bought new clothes, which they bought directly with money. But when buying jewelry, they used Guan Pu, but unfortunately, they both lost.

In the end, Tang Ning paid for these pieces of jewelry and gave them to Aunt Niu and Wang Po.

This made the senior brother very unbalanced, and he said, "Why don't you buy the jewelry from the place where I lost?" ”

Tang Ning scratched his head and said: "What he said is a pearl, red gold, and a family bi, it's fake when you hear it."

Besides, don't you pay attention to wealth and not expose it on the rivers and lakes? Get such a precious thing to wear on your body, our family doesn't have that status yet, isn't this waiting to be robbed?

I'm not going to do such a stupid thing. ”

The senior brother was anxious, and he said, "You can leave it to me, and I will keep it for you!" ”

"You? You're a thief......"

"What's wrong with the thief? Three hundred and sixty lines, the line is the champion, and the thief can't be the thief's champion? You are discriminating against occupation, I will go to the government to sue you, and you have to compensate me for mental damages! ”

Tang Ning was sweating profusely when he heard this, these were all what he said to Liu Yi'er when he was poor. I didn't expect my senior brother to learn and use it, when I said it, I didn't say that I was a thief, but he put it on, and this learning ability is still quite admirable.

Little Stone didn't talk much along the way, and didn't seem to have much to want. Like Downing, he has a pocket on both sides of his clothes, put his hands in the pockets, and learn to walk forward like Downing.

Two eyes swept over every stall on the side of the road, and they didn't stop for a moment. It was as if there was nothing in this bazaar that interested him.

Tang Ning turned his head curiously and asked, "Stone, don't you have what you want?" If you have it, just say it, my brother is rich now, just say what you want, and my brother will buy it for you. ”

"I remember when you told me the story of the Three Kingdoms to Li Zi before, you said that Lu Bu in it had a Fang Tian painting halberd, right?"

"yes, what's wrong?"

"Give me the whole one!"

“……”

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