The strongest soldier

Luo Zheng also thought deeply when he heard Cao Xi's question. This place is full of traps and very dangerous. So how did Tang Sheng get in? Could it be that all the mechanisms were closed before coming in? What if someone follows me? This is unscientific. There must be a safe passage. He couldn't help but darken his face. He looked at everyone and said, "Try several connected rooms. There must be a safe passage here. There was no movement in the room I just tried."

"It makes sense. Each room is connected to six rooms. One of them must be safe, but which one is safe? We can test with water and soil here. Once we go in, what should we do if there is nothing to test? Even if we bring it, we can't bring it with us. How many? Which rooms have mechanisms? Which rooms are safe? There must be rules here, otherwise how could others get in? Think about it again." Cao Xi also said in a deep voice.

"Try it first." Shi Qian suggested. He picked up the cement and soil and threw it into other passages. He found that there were hidden weapons, either poisonous arrows, poisonous smoke, or lasers. Each one was fatal and could not be cracked. Everyone's road was completely blocked.

Everyone pondered. With a honeycomb-like building structure, a labyrinth-like layout, and various mechanisms, the space for everyone to move was only an iron house of about ten square meters. There was no detour, no external aid, not even a signal, and no way to communicate with the outside world. , under such circumstances, everyone suddenly felt helpless.

The room was eerily quiet. Everyone was thinking, no one spoke, and the invisible pressure dissipated. After a while, Luo Zheng suddenly thought that the only clue here was the number at the entrance, which was the same in all rooms. Only the numbers are different. It is impossible for a place like this to have more numbers for no reason. Thinking of this, his eyes lit up and he looked at everyone and said in a deep voice: "Which numbers are what?"

"Numbers?" Everyone looked at Luo Zheng in surprise. They suddenly realized something and looked at the numbers at the entrance of the passage. Everyone had seen them before and didn't pay much attention to them. Now their mood was different and their thoughts were different. Okay, everyone first looked at the numbers in the room they were in, and then looked at the numbers in the rooms where Luo Zheng was testing and there was no problem. There was no pattern at all. Then when they looked at the other numbers, there was no pattern either, and they couldn't understand it at all.

"The focus is on the number of rooms without mechanisms. Let's see if there are any patterns?" Luo Zheng said in a deep voice.

"241, 449, what do these two numbers mean? What do they represent? Are they the labels here? That's not right. The labels should have continuity. Are they coordinates? That's not right either." Shi Qian said to himself thoughtfully.

Luo Zheng was not good at this highly intelligent deciphering method, which involved advanced mathematics. Luo Zheng could only place his hopes on Shi Qian, who was good at stealing, and Cao Xi, who was academically sophisticated. Cao Xi couldn't understand after looking at it for a long time. Not good at this kind of thing, I looked at Shi Qian expectantly.

Shi Qian had a pensive look on his face and kept talking to himself in a low voice. Suddenly his eyes lit up and he said in surprise: "Yes, I know what it means."

"What do you mean?" Everyone looked at Shi Qian in surprise, their eyes full of expectation.

"It's a prime number." Shi Qian said excitedly.

"Prime numbers, what are they?" Everyone looked at Shi Qian in confusion and asked.

"It makes sense. It's yours. You can think of it like this." Cao Xi's eyes suddenly lit up and he admired, looking at Shi Qian with affectionate eyes.

"Hehe, let me just say, there must be a pattern. I didn't expect it to be a prime number. The person who designed this must be a math geek or proficient in mathematics. People who don't understand mathematics would never expect that these numbers are actually prime numbers. Now, we just It will take one or two more attempts to confirm this inference." Shi Qian explained excitedly.

"Wait, what are prime numbers?" Luo Zheng asked curiously. After all, he was only a high school student. He had forgotten many things he had learned before. He learned them again when he got to the army, but all he learned were related to war.

"Prime numbers are also called prime numbers. There are infinite numbers. They are a natural number greater than 1. Except for 1 and itself, it cannot be divisible by other natural numbers (primes). In other words, the number has no other numbers except 1 and itself. Factors, otherwise called composite numbers, 241 and 449 cannot be divisible by other numbers except 1 and itself. Looking at the numbers in other channels, each number can be divided by other numbers." Shi Qian explained carefully.

Luo Zheng reacted as soon as he heard this. He looked at the numbers in other passages. Sure enough, the numbers in the other passages could be evenly divided by other numbers. Only the numbers in the safe room could not. He was overjoyed and looked at Shi Qian and said with admiration: "It's really yours. This is all right." You can guess the pattern, this time you will take credit, and we will try again."

"Okay, I'll do it." Shi Qian agreed, picked up a piece of cement and soil and climbed into another safe house, then opened all the connected passages, looked at all the numbers at the passage entrances, and quickly calculated while finally finding the number 13. 13 is not divisible by any number except 1 and itself, so it is a prime number.

Shi Qian threw the cement and soil into the room connected to the 13th passage, but there was no movement. Then he threw another piece of cement and soil into the other non-prime passage room. Poisonous smoke ejected from it. Shi Qian quickly closed the passage door, excited. Shouted: "Our inference is correct, safe, hahaha."

"Hahaha." Everyone laughed excitedly, and their depressed mood was swept away.

"Great, let's try again, just in case, no one brings more pieces of cement and soil in." Luo Zheng said in surprise, walked to the entrance of the passage, picked up two pieces of cement and soil, and brought them to Shi Qian. In the past, I opened other connected passages and threw cement and soil in. Sure enough, there was a mechanism.

Others also came in with cement and soil. Each room was tested and all had mechanisms. This conclusion made everyone feel confident. They immediately climbed to the next room, then opened all the passages and found a prime number of 997. Everyone then went one by one. Tried it and the result was as expected.

After proving the inference correct twice in a row, everyone laughed excitedly. The surprise of solving the difficult problem was indescribable. As if they had won a great victory, everyone climbed down to the next safe house, opened all the passages, and quickly found the key to the prime number. In the room, throw the only piece of cement and soil in. There will be no movement. It is safe.

"Hahaha——" Everyone looked at each other and laughed excitedly. This sense of accomplishment was very wonderful.

"I didn't expect that this Jedi with so many mechanisms would have a prime number of ways to survive. It's a bit interesting. Also, do you think of an ancient tomb when you look at this place? Every room is a tomb. Entering it means death. No one can easily guess the only way to survive. Such high-level The IQ machine is unbelievable." Luo Zheng said with a sigh.

"Eh? There is something in this safe house. Come quickly, everyone." Shi Qian, who was exploring the road ahead, suddenly shouted.