How to break into a math book

The second 5 minutes of searching for clues started counting down.

They just discovered some problems from the "Sunflower" and "Mona Lisa's Smile" on the second floor, and they are going to go up one floor this time.

When walking up the spiral staircase, Tu Hua couldn't help but pause.He always felt that this museum was weird, especially the staircase, no matter the shape or the number of steps, seemed to have a deep meaning that he hesitated to speak.He couldn't help but looked up, only to discover the amazing scene that they had been neglecting all this time.

This staircase is like a spiral shell of a snail, constantly spiraling and extending upwards, and there is no end in sight.Wang Boyu followed Tu Hua's gaze and opened his mouth wide in surprise, "How tall is this museum...?"

Sun Wei and Shen Siyi were equally astonished, but Sun Wei discovered something different.

"There are words on the handrail of this staircase!" The brown wooden handrail is carved. At first glance, it seems to be a pattern of potholes, but if you lie down and observe carefully, you will find that there is no carving at all on the handrail. Those dense traces are simply crowded together. Text.

And it's a math character.

Tu Hua squatted down to examine carefully, and he found that there were many radical numbers on the wooden armrest, and some characters were mixed among them, such as "π (派)" and "e".

So what does this represent?

Sun Wei lowered his head and read out all the root numbers that appeared on the armrest: "root number 2, root number 3, root number 5, root number 7..."

"These numbers are root signs of incomplete square numbers, which means...these numbers are irrational numbers." Sun Wei concluded.

irrational number?Does this sequence contain irrational numbers?

In the set of real numbers learned in high school, a number with a limited number of digits after the decimal point or an infinitely recurring number is a rational number, while an irrational number is generally an infinite non-repeating decimal number. 2, 3, 5, 7... These numbers cannot be written as the square of a rational number, so the number obtained by taking the square root of them is an irrational number.

Shen Siyi said: "As for the other two numbers, π represents pi, which is written in decimal form and is infinite and non-recurring, so π is an irrational number; and e represents a natural constant in mathematics, usually defined as lim (11/x )^x, x→∞; approximately equal to 2.71828...is also an irrational number."

Tu Huaning eyebrows: "So this sequence of numbers is related to irrational numbers?"

Shen Siyi also frowned: "Irrational numbers and infinitely looping stairs, as well as Van Gogh's "Sunflower" and Da Vinci's "Mona Lisa", there seems to be no connection between the two...so I think we'll have to look for other leads."

The four of them were about to climb upstairs, but the time seemed to pass very fast this time. Before they had time to go to the next place to look for clues, the system bell rang.

The four had no choice but to return to their positions.

Standing beside Tu Hua, Wang Boyu whispered, "What if we are drawn this time?"

Although Wang Boyu looks tall and big, his actual age is nearly one year younger than Tu Hua, and he is still a minor. Most of the time, Tu Hua feels like his brother and has to find a way to take care of him.

It was the same this time, Tu Hua comforted him: "It's okay, I will help you."

Wang Boyu was skeptical, but managed to calm down.

The rabbit walked to the turntable and moved the red pointer. This time the pointer was not rotating so fast, and it stopped after turning five or six times, and stopped at the No. 2 position.

No. 2 is Sui Li.

But he didn't seem nervous. He walked to the treasure box with a calm expression. Facing the fierce rabbit, his tone was still unhurried: "There is only one gem in the treasure box in front of me."

The rabbit stared at him for a long time, then stepped forward to open the treasure box, and there was only one blue gem in it.

Sui Li showed a relaxed smile, and the other challengers also sighed, thinking that Sui Li had discovered the sequence of the twelve treasure boxes.

In the end, the rabbit said with a cold face: "I hate unfairness the most! Although you got the answer right...but you cheated! You are a disgusting and cunning human being!"

Sui Li suddenly panicked: "What cheating? How can this game be cheating! Don't spit blood!"

The rabbit snorted coldly, and rushed forward, and Sui Li, who had punched him hard, couldn't straighten up.Although the character of the rabbit looks soft and harmless, in fact, his fighting power is astonishingly high, and Sui Li has no defense at all.

The rabbit walked up to him, stretched out his hand and pulled a chain off his neck. A red pendant the size of a water drop was hanging in the center of the chain. He stretched out his hand and squeezed it lightly, and a red system screen popped up in front of him immediately.

what is this? !!

Not only were all the challengers present surprised, but even Su Gechi, who was standing on the sidelines watching the battle, was also surprised: "This is... a plug-in program?"

cheat?Sui Li brought it in? !No wonder he was so lucky every time, as if he could always find the trick to pass the level, Tu Hua couldn't help but despise him, and the other challengers also looked at him with complicated expressions.

The girl standing next to him asked Rabbit: "So he can answer this question completely by hacking?"

Before the rabbit could speak, Sui Li got up angrily and yelled at the girl, "Nonsense! I've never used any hooks before! It's all his talking nonsense!"

The rabbit snorted coldly: "Still quibbling, do you want me to push you into the snake den?"

Sui Li's expression froze immediately, he looked down with a pale face, and obediently kept silent.

Su Gechi came over, frowned and looked at the red pendant in the rabbit's hand, and then slid his fingers on the system screen: "This program... is written in a very ordinary way. How much did you pay for it?"

Hearing Su Gechi's question, Sui Li didn't react for a while. After a long time, he realized that he might really not be able to pretend anymore. He looked at the cannibalistic rabbit, and then glanced at the other challenges that were glaring around him. Those who had no choice but to resign themselves to their fate and whispered, "80."

Su Gechi smiled disdainfully: "This program can only crack 20% of the game, and it is useless in most cases. I believe you will also find it during use. Including the number of gems in this level , the plug-in can only let you know what is in the box in front of you, and it is impossible to detect what the real content of the level is."

"So...you lost money."

Sui Li's face is earthy in color.

Tu Hua couldn't help but think about the virus. I remember Su Gechi said that the virus was brought in by a certain challenger. Could it be Sui Li's plug-in?

He was about to ask, but Su Gechi looked at him suddenly, then shook his head slightly, motioning him not to speak.

So this plugin...has nothing to do with viruses?

Su Gechi must be afraid that what he said about the virus would be known by other challengers, causing spread and panic.But if the virus has nothing to do with the cheat brought by Sui Li, does it mean that another person brought the virus program in?

Tu Hua couldn't figure it out, so he heard the rabbit say to Su Gechi displeasedly: "Hey, cleaning up cheats is your business, right? You let this kind of thing spread in the game for so long?!"

Su Gechi quickly cleaned up the plug-in program, crushed the drop-shaped pendant, looked back at the rabbit, and whispered in his ear: "Cleaning up viruses is also my job."

The rabbit instantly showed fear, and took a few steps back before changing into an expression of baring its teeth and claws: "You are just an NPC like me, and you can't interfere with the system's decisions at all!"

Su Gechi smiled, and retreated to the sidelines.

A farce ends here.Sui Li stared blankly at the 80 that had been broken into slag, and his heart ached. Compared with his hatred for Su Gechi, what made him more afraid was that the rabbit would deal with him next.

He was afraid that the rabbit would throw him into the snake den if he didn't agree with each other. Elimination is not terrible, but what is terrible is that he has to face the entanglement of dense snakes. It is estimated that he will have nightmares all his life.

Who knew that the rabbit's eyeballs rolled around, looked at Sui Li for a while, looked at Tu Hua for a while, and looked at Su Gechi standing beside him for a while, and suddenly opened his mouth and smiled: "Okay, take it away." Your hack, I will spare your life for the time being!"

Sui Li finally breathed a sigh of relief, despite the contemptuous gazes of other challengers on his body, he kept his head down and did not speak.

But Tu Hua was not immersed in the anger of someone using cheats.

Sui Li's use of cheats did make the game less fair, but the existence of the virus was what made the game terrible.The reason why Rabbit was able to find Sui Li was that he hated unfairness, and the virus program did not want such a cheat to exist, because the cheat would increase the user's clearance rate.

But what he couldn't understand was, since the rabbit hated unfairness the most, why did Sui Li stay?

Wait...fair?

As an NPC with a virus program, Rabbit actually said that his most important thing is fairness?The word fair...would it reveal any different information?

Tu Hua raised his head, his eyes wandered between the rabbit and Sui Li.The number of gems in the box in front of Sui Li is 1, that is to say, the second digit of this sequence of 12 numbers is 1...

Sunflowers, the golden ratio of the Mona Lisa, spiral staircases, and various irrational numbers...

And the most important thing——[Rabbit Sequence].

Tu Hua stared at the grumpy and somewhat obsessive-compulsive rabbit in front of him. It was the appearance of this rabbit that misled him, making him think that the "rabbit sequence" referred to the sequence level set by the rabbit in front of him.

But in fact, the rabbit sequence actually has a famous name in mathematics - the Fibonacci sequence.