Please, let me play Yu-Gi-Oh!

"Is that you, classmate You Chen?"

"Before starting to build, I would like to ask first, how much do you know about the most correct construction thinking now?"

The bald middle-aged man looked at You Chen and then asked.

Hearing this question, You Chen was a little stunned.

He really didn't know much about what the most correct construction thinking was.

To be honest, everyone has different thinking in construction and different construction directions. They are rich in history. Is there really the most correct construction thinking?

However, You Chen didn't feel that his thinking was necessarily right.

So I decided to listen to it first.

"I hope the teacher can give me some advice." You Chen.

The bald middle-aged man was a little stunned when he heard this. He originally thought that You Chen had a rebellious and prickly personality.

Unexpectedly, he looked a bit humble.

This was not what he thought.

But what puzzled him was, did this guy really not know?

"Have you top students not learned the analysis and thinking courses of construction?"

The bald middle-aged man then asked.

"Ah, Teacher Bobo, he is only a first-year student." Wen Yi had to remind him.

"Huh? First grade?"

"The welfare of your school is already so good? You also invited me to help you build a deck in the first grade? That's not right!"

"It shouldn't be that simple."

"I see."

Teacher Bobo's eyes flickered at this time, as if he had seen through everything.

You Chen raised his eyebrows, had he already guessed it?

So it seems that there is still something.

"I understand, your father is the school director!"

"So you have privileges, right?"

Teacher Bobo’s follow-up words followed.

You Chen: "."

Wen Yi: "Haha. Hiccup!"

Liu Qingyi: "This guess seems reasonable and reasonable."

Qin Tie: "Actually, he is also a top student."

When Teacher Bobo heard this, his face wrinkled up, like an old man on the subway.

No, today is not April Fools' Day either.

He doesn't look like an idiot, how come he can say such big words?

A first-year honors student?

What a fuss!

I have never seen a first-year special student with such strength and potential that he can directly enter the national team.

But look at how serious they are.

It doesn't seem like it's a joke.

"Really?" Teacher Bobo couldn't help but ask again.

All I saw was that they were all nodding.

Teacher Bobo finally realized that the young man in front of him was really extraordinary.

However, since I have become a top student, even if I have not studied it, I will understand construction to some extent.

Unless the build is matched by someone else.

Won’t you know if you try it?

"Then let me ask you, your deck contains forty cards, and there are three Black Magic Arrays in it. If you start with five cards, what is the probability of drawing the Black Magic Array?"

Teacher Bobo has already asked.

And when You Chen heard the other party's question, he seemed to realize something?

The opponent's so-called most correct construction should be the so-called probability construction, right?

It looks like it, the more we look at it, the more we look like it.

As a card player, You Chen has already heard of this kind of thing.

So you can say it without thinking.

"Actually, you just need to calculate the probability of not being able to draw, and then subtract the probability of not being able to draw from 1."

"First we calculate how many combinations there are of randomly drawing five cards from the forty cards."

"Then from the cards other than our key cards, that is, there are 37 cards left, how many combinations are there of drawing five cards."

"Then divide this combination by the total number of combinations, which is the probability of not being drawn."

"1 minus this probability is the probability of drawing."

"In order to omit calculations here, I'll just tell you the answer."

You Chen didn't bother to calculate in order to omit it.

It is more appropriate to give the answer directly because it is already ingrained in my mind.

"There are 435,897 possible combinations of drawing five out of 37 cards!"

"There are 658,008 combinations of drawing five out of 40 cards!"

"So the probability of not being able to draw is 0.66244"

"And the probability of drawing is 1-0.66, so the probability is around 0.33."

"Therefore, there is a high probability of one-third that the key card can be drawn in the starting hand."

At this moment, when they looked at You Chen, something was wrong.

Because this world is based on dueling, not many people actually study other subjects seriously.

Or you can think of it this way, those who are strong in dueling are all because they focus on dueling.

Those who were weak in dueling felt that their future was hopeless, so they became normal students and took exams in majors such as mathematics, physics and chemistry.

Therefore, it is understandable that top students are actually poor academics.

Their minds were on the duel.

If you are distracted by mathematics, physics and chemistry, you will undoubtedly have no time to take care of it.

So when You Chen showed such an amazing talent as a top student, they were obviously a little surprised.

Teacher Bobo belongs to this category. He is proficient in mathematics, physics, and chemistry, and he is also proficient in dueling, so he can become an architect.

The all-round comprehensive level is sufficient.

So in fact, Teacher Bobo just asked if he knew what the probability was, instead of asking You Chen how to calculate it.

Who knows, You Chen misunderstood and thought he would be the one to count.

He actually explained it in more detail than what he taught.

Okay, okay, are you in the first grade like this?

But before he could ask.

You Chen seemed to have realized what he was going to ask, and he continued.

"If there are nine key cards, then the probability of drawing them at the beginning is 75%!"

"The reason why there are nine key cards is that the cards of Yu-Gi-Oh can search each other, so sometimes, when you draw one, another card will appear."

"In general, it is enough to maintain a probability of drawing key cards above 75%, because other cards also need to be added to maintain the balance between the decks."

After You Chen finished speaking.

Teacher Bobo's mouth twitched a little. Good guy, he would answer the question quickly.

This is really the question he was going to ask next.

However, since the other party had already answered, he had to ask again.

"But some decks have more than 9 cards, and the deck construction may even exceed 40 cards."

"At this time, how should we calculate how many key cards should be kept at the beginning and how many total decks are there to ensure a 75% starting rate?"

This question has been deepened.

Many people have already started to feel dizzy when they get here.

As for Liu Qingyi and the others, they were dizzy at the beginning, thank you.

It's no problem to let them duel, but it's really bad to let them learn this.

Teacher Bobo thought you couldn't do it now, right?

It took him a long time to learn it.

You Chen was silent when he heard this.

Just when they all thought that You Chen might not know it.

You Chen said slowly.

"Actually, it's not that difficult."

"It can still be calculated."

"If you have N moving point cards."

"Then the total number of cards in your deck is X."

"Then write an equation."