Let You Escape From The Secret Room, But Not Let You Pass The Level Directly

Lin Ou stretched himself.

Ye Xin moved her arm back to normal, and thoughtfully said: "From the current point of view, this is also the decryption of luck. There are three doors, and the probability of each door being a life door is 1/3, that is to say, 1/3 is With the highest probability, no matter which door we choose, it will be the raw door?"

Lin Ou gave Ye Xin a thumbs up: "Your thinking is correct, but the paradise will not be so kind, there must be tricks in it, we might as well choose a door at random, which one do you think?"

"Gate 2.

"Door 1."

"Gate 3.

Everyone has different opinions, because the probabilities are the same, so they can't judge, so everyone's answer is different. Ye Xin said it was door 2. In her opinion, Lin Ou's student number is number 2 in the copy of Rubik's Cube. This number may have some deep meaning.

"Then number 2."

Lin Ou said casually, and the five of them followed Lin Ou slowly to the door No. 2. Cao Xiu took the lead this time and said with a serious expression 03: "I'll open the door. If I choose the wrong one, I'm the only one who will die. You can still do it." Picking the remaining two doors and winning for so long, it’s time for me to contribute to the team.”

This is indeed the case.

According to general rationality, two players will die if there are three doors, and the remaining players can choose the last life door based on the answers eliminated by the first two players.

That is.

Only three of the five members of Lin Ou's team could get out alive.

Without waiting for everyone to answer, Cao Xiu was going to open door No. 2, but when his hand touched the doorknob just now, door No. 1 suddenly opened, and there was a big word "dead" written on the back of the door. He didn't dare to open the No. 2 door again, and looked at Lin Ou with a look of surprise.

Door No. 1 is the door of death!!

Now the probability has changed again, the remaining two doors have a probability of 1/2 of being the raw door.

Sure enough, there was something tricky.

"The probability that door No. 2 is a life door has increased!"

"But it's useless to increase it. The probability of gate 2 and gate 3 is 1/2, that is to say, we have to exclude one gate." The policeman Uncle said with a serious expression.

Seeing this, Cao Xiu put his hand on the handle of door No. 2 again, ready to open the door.

"do not move!"

"let me think"

Lin Ou stopped everyone's plans to open the No. 2 door. He always believed that if the sky destroys the nine roads, there must be a life. The sudden opening of the No. 1 door should be a reminder of their way of life in the paradise.

Just what the hell is going on here?

He still needs to savor.

Lighting up a cigarette, he looked like he should not disturb strangers, but his brain was running at a high speed at this moment, and he couldn't help thinking, since the door with the highest probability of prompting in the light curtain is the door of life, that is to say, the remaining two doors must be There is a door with the highest probability of being the door of life.

but now the problem is

The probability of the remaining two doors is 1/2.

Can't see who is higher and who is lower.

Think about it another way: there are three doors in the beginning, one life and two deaths, the probability of them choosing the life door is 1/3, and the probability of choosing the death door is 2/3, why is the probability of the death door so high?

So.

Now there are only two doors left, what is the probability that they will choose the door of life?

From the perspective of probability, the probabilities obtained by using different object groups as a reference are different. For example: there is a box now, and there are 100 glass beads in the box, and there is 1 colored glass bead in the 100 glass beads , the remaining 99 are all white, now one person draws the glass beads in the box, there are a total of 100 chances, each time the wrong choice is made, the glass beads must be put back into the box.

It stands to reason.

The probability of this person getting colored glass beads is 1/100, but he gets 100 times, in terms of overall probability, the probability of getting colored glass beads 100 times is 100%

But, in fact it is not the case.

Because the probability of this person getting colored glass beads at a single time is only 1%, the probability of getting a single colored glass bead will not increase as the number of times increases.

the same way.

The probability of the three doors is 1/3. After excluding door 1, the probability of them choosing the raw door among the remaining two doors is 1/2, which is calculated from a single time.

if.

If the three doors are regarded as a whole...

Lin Ou took down two packs of Ziyun and one pack of Huazi from the cigarette rack in the lounge, placed the three packs of cigarettes in parallel on the exquisite dining table, and murmured: "I have three packs of cigarettes, choose one pack at random, The probability of getting a Huazi is 1/3, and the probability of not getting a Huazi is 2/3."

810 said.

Lin Ou put a pack of Ziyun into his pocket, and said to himself: "Now, the probability of me getting Huazi is still 1/3, because I have made a choice just now, but the remaining pack of cigarettes is Huazi." What is the probability of the child..."

Speaking of this, he suddenly froze.

Suddenly he turned his head to look at door No. 3, and stayed there for a full 10 minutes. His originally frowning brows gradually eased. Someone once said that when encountering a problem, first write the problem on paper, then you will solve half of the problem , Lin Ou thinks this sentence is very philosophical.

Pass three packs of cigarettes.

He confirmed the answer.

"Gate No. 2 is the door of death, and door No. 3 is the door of life." Lin Ou was in high spirits, exuding a certain charm all over his body, and looked at the stunned four people and said confidently.

It is surprising.

The four of Ye Xin didn't even think about it, they went directly to the door No. 3, and Lin Ou was taken aback when they saw Lin Ou. She thought the four of them would ask the reason, but they didn't expect to be so decisive. In fact, the four of them knew it well. After Lin Ou stopped smoking, he must have found the most correct answer.

(New book, ask for flowers, ask for a monthly pass.).