Chapter 111: Probability of Random Events

In the pavilion, on the coffee table, a plate of eggs is placed in front of the guests of the mushroom house.

The younger generation watched it with trepidation, and the older generation waited with great interest to see the excitement, and even the film crew was waiting for Peng Peng, Dabai and others to make a fool of themselves.

Raw eggs hit the head, that picture, tsk!

Of course. Eggs, both raw and cooked, are good and bad.

As the first to participate in the game, Peng Yuchang came out of the queue hard, but lowered his head and folded his fingers, muttering something in a low voice.

In fact, he is shrewdly calculating that the probability of the first person to smash the egg to draw a raw egg is 4/40, which is a 1/10 probability. What about the second person? If I smash a raw egg, the probability of the second person drawing the raw egg is not 3/39, which is 1/13.

Hmm? Why is the probability of the second person hitting the raw egg smaller than mine? Isn't this a loss?

The more Peng Peng pondered, the more he felt that it was not fair to him to be the first to smash the egg.

"Peng Peng, don't rub it off! Quickly choose an egg! You are an elder brother, take a good lead!" Teacher He urged.

"Hehe, hurry up! It's going to be smashed sooner or later, what are you still trying to figure out!" Sha Zhantang added probely.

"It's not...... I don't think it's fair......" Peng Peng couldn't help but express the doubts in his heart, "You see, the probability of the first to smash the raw egg is 1/10, which is greater than the probability of the person behind?

"Really?"

Sha Zhantang frowned and asked, and he secretly pondered, as did the other guests.

"The first one is 4/40, the second is 3/39, the third is 2/38 and the fourth is 1/40...... Huh? It's different, huh?"

Sha Zhantang calculated for a while, and stood on the same side as Peng Peng, and also thought that there was a problem with the rules.

The others had different expressions, and they were all carefully calculating.

Suddenly, Zhang Zifeng raised his hand and shouted, "I know!

"Oh, then invite our Zifeng classmates to come and talk to everyone!" He Jiong smiled and made a gesture of please.

Wei Baichen couldn't help but secretly feel funny when he saw Zhang Zifeng raise his hand to answer like a good student, and he no longer calculated the probability question, just waiting for her to explain.

In fact......

Since graduating from university, his knowledge reserve has been like a mudslide, all the way to the landslide, and most of the ancient poems and texts he has memorized, and the physics and chemistry students he has learned, most of them have been returned to the teacher. In mathematics, all that remains is addition, subtraction, multiplication, division, and solving quadratic equations......

The most infuriating thing is - English!

I have been learning for more than ten years, and one of the words !!I am most familiar with for more than ten years is "abandon", and I have to walk around when I see crooked nuts asking for directions...... I don't dare to communicate! I'm afraid that my mountain city Ingrid will show timidity!

"Well, this is a simple random probability problem, if you don't put it back in the drawing, in fact, the probability of everyone drawing a raw egg is equal!" Zhang Zifeng replied cleanly.

"Oh~~"

Wei Baichen and Peng Peng dragged their voices, showing the appearance of sudden realization.

Huang Lei crooked his mouth and smiled evilly, "Huh, you two stupid boys understand?" Dabai, Peng Peng, who will tell us more carefully and carefully?"

Sha Zhantang glanced at Teacher Huang's expression, and also encouraged, "That's it, I'm too stupid to understand." Pemba, you explain it!"

“e...... I'm not very good at verbal expression, so let Dabai talk about it......! I'll add it!"

Peng Peng smiled, and pushed him out with a force on the big white waist.

Wei Baichen secretly regretted that he had to pretend to be X just now...... This is inconsistent with my usual modest, low-key, sincere, innocent, and kind nature!

Now, Teacher Huang, Teacher He, Sister and others are all counting on it, and Wei Baichen can't excuse himself anymore, so he stared at Peng Peng viciously and found that the guy was pretending to be innocent......

"Da Bai, you can explain what you understand, just explain it simply! Brother, support you!" Peng Peng clenched his fists and bent his elbows, cheering Wei Baichen up, "Come on!"

“......”

Wei Baichen put his hand on the egg, thought silently for a while, and caught a glimpse of Jin Duoduo who was waiting to see the joke...... Just now, I did boast about myself.

"Okay, then I'll talk about it briefly. Wei Baichen tried hard to find the mathematical memory he had learned, and gradually had a vague concept, "But what about it, I want Peng Peng to cooperate with me." ”

Well?

Do you need people to cooperate with you to explain math knowledge?

Peng Peng didn't know what kind of medicine he was selling in his gourd, but he didn't think much about it, and simply smiled and said, "No problem! Anyway, I know what's going on, and it's perfect to cooperate with you!"

"Oh, well, just stand here. ”

Wei Baichen pointed to his feet, and Peng Peng did so, running happily to stand still.

After doing this, everyone's appetite was hanged, and they were all waiting to see what Dabai did.

I saw that Wei Baichen picked up an egg casually and said unhurriedly, "For example, the first time I got a hard-boiled egg, I smashed it on my head - just like this!"

Click!

It's the sound of broken eggs!

Then, I heard Peng Peng's exclamation.

"Oh my God, Dabai, you can demonstrate, what are you doing by smashing my head?!

"Don't get excited! Hard-boiled eggs, what are you afraid of? ”

Wei Baichen slowly removed the smashed hard-boiled eggs from Peng Peng's forehead, "The first time you smash a hard-boiled egg, the second time you hit a raw egg, the probability is 36/40 times 4/39." ”

"Like...... That's right. ”

Peng Peng pulled the broken eggshell off his forehead, and thought to himself, it was really like that.

"Brother, there are ...... There are egg yolks. ”

Zhang Zifeng smiled and handed over a tissue.

Peng Peng, a foodie, didn't see it at all, so he peeled off the hard-boiled egg, stuffed it into his mouth, and vaguely urged, "Then what? Dabai, you go on." ”

"Yes!" you continued. Sha Zhantang just opened his mind, and he also urged.

"On the other hand, it's the first time I got a raw egg!"

Click!

Another crunch!

The egg was broken again, and shattered to the ground......

Peng Peng shouted again: "Da Bai, don't run! If I don't give you some color today, I'm not a man!"

"Hahahaha......"

Wei Baichen laughed and ran in circles, having fun while running, "Not a man? Hehehe, isn't it just breaking two, no!

"If the first one is broken, forget it. This time, this time...... But raw eggs!"

Peng Peng touched his smooth, wet bangs and rolled his eyes at Wei Baichen.

"Hahahaha!" Huang Lei was amused by these two boys, "You can't blame Da Bai, he didn't expect that he would draw raw eggs when he said raw eggs!"

"Hee-hee, that said, I really didn't know it was a raw egg. ”

Wei Baichen spread his hands innocently.

This is not entirely true, and it is strange to say, the moment he picked up the egg, he strongly felt that this time it was a raw egg.

He Jiong smiled and persuaded him, "The matter between the two of you should be settled in private." Big white, you move on to your algorithm. ”

"Okay. ”

Wei Baichen looked at Peng Peng's hair sticking together, and forced a smile, "The first time is a raw egg, the second time is a raw egg, the probability is 4/40 multiplied by 3/39, the two times are added, the probability is still 1/10, and the probability of drawing a raw egg is the same as the first time you draw it." ”

"Oh, I see, as I understand it!"