The First Happy King of Zhenguan in the Tang Dynasty

Chapter 299 Ask a Question to Test You
"Succeed, listen up!" Li Muyun, with one leg crossed and the other raised, was about the same as a storyteller in the West Market. He tapped his hand on the table, "Said Xiao Ming's walking speed is twenty per hour. A dog raised by Xiao Ming ran twice as fast as him. One day Xiao Ming went to school, and his dog ran with him. Every time he ran to his side, he would turn around and run back home, and so on. Question: When Xiao Ming arrived at school an hour and a half later, how far did his dog run."

What is this problem called?The following group of Taixue students were dumbfounded when they were asked!

One of them shouted: "Sir, what's the problem with you, is Xiao Ming crazy or the dog crazy? Why are you running back and forth?"

"I want you to count how many miles the dog has run, not for you to judge whether Xiao Ming is crazy or the dog is crazy or I am crazy! Anyway, this is today's homework. I need to know the answer tomorrow morning. I can't figure it out. This year you 'Mathematics' failed all subjects"

The students don't know what failing a subject is, but it doesn't sound like a good thing, and it probably means failing. This is the first time for the students to experience what it means to be a scholar meeting a soldier, and it's hard to explain.

Of course, this is also the first time they have encountered such a domineering assignment of homework by a gentleman, no, it should be said to be barbaric, if the barbaric teaching method is difficult for the students to accept.

So immediately after the get out of class was over, some students approached Master Shan Chang of Taixue again, denounced Li Muyun's inhumane teaching methods, and hoped that the school could expel him from the teaching staff.

But to the disappointment of the students, the head of the mountain still didn't say anything, he just sent them out with a few perfunctory words, and then started to think about Xiao Ming and the dog with his head full of gray hair.

As for Li Muyun, who assigned such a perverted homework, he went back home leisurely. In the afternoon, he had to go to the construction site to supervise the work, otherwise God knows what those bastards can do to repair the palace walls of the palace. What if the repair is not good enough? It's not about losing your head.

And when he was looking at beauties all over the street and measuring the busts of a group of ladies with admiring eyes, Mu Yu, the little girl who had been following him, tugged at his skirt: "Master, did Xiao Ming's dog run sixty miles?" ah?"

"Huh? How did you figure it out?" Li Muyun stopped and turned his head in surprise.

"Difficult, could it be a wrong calculation?" The little girl was a little tangled up, almost crying with Li Muyun staring at her.

Li Muyun suddenly showed a big smile: "That's right, that's right, Xiao Ming walked thirty miles in one and a half hours, so the puppy's speed is twice as fast as his, so naturally he ran sixty miles."

"Am I really right?" The little girl exclaimed in surprise.

"That's right!" Li Muyun nodded seriously.

In fact, this kind of problem can only be regarded as a brain teaser at best, as long as the corner is turned, it is a very simple multiplication problem.

But if you can't turn that corner, then I'm sorry, even if you count your whole life, you probably won't be able to figure it out.

However, it was precisely because of this that Li Muyun discovered that the little girl who was following behind him was actually so smart and knew how to consider the overall situation, which was much better than those students in the Taixue.

……

Li Shimin sent Li Muyun to the Taixue, naturally he would not be at ease, and it was certain to arrange for people to follow the situation, so not long after someone arrived home, His Majesty the Emperor of the Tang Dynasty also received a report from his subordinates.

"What did you say? Calculate how far the dog has traveled? What kind of nonsense is this!" After listening to his subordinate's report, Li Shimin's first reaction was to want to beat him with a whip.

"Return to Your Majesty, this is how Li Muyun came up with the question!" The subordinates who were sent to the Taixue also had a troubled expression on their faces, thinking that this question was not made by me, why are you getting angry with me, if you want to vent your anger, go to Li Muyun.

"Hmm!" Li Shimin seemed to realize that he shouldn't take his anger out on others, and continued with a muffled snort, "You just said that Li Muyun was not serious in class? He fell asleep in class?"

"Yes, Your Majesty, I thought he did it on purpose, and wanted to get the Taixue to expel him, and then he could confidently resist the order."

Of course Li Shimin knew what a certain bastard was really thinking, he waved his hand and said, "You don't need to tell me this, I know it very well, you just need to tell me what else he did."

"No!" The subordinate replied, after thinking for a while, he finally shook his head and said, "Your Majesty, there is nothing else. Then Li Muyun sleeps and sleeps. It seems that he has no intention of teaching those students at all."

"Okay, you go down first, and always pay attention to his movements in Taixue." After Li Shimin lowered his head and thought for a while, he sent his men out, and then glanced at the eunuch beside him: "Go and answer this question with a few ten students." Let the princes over the age of [-] say, oh yes, there are Changle and the others, let them do the math too."

"No!" The eunuch responded, turned around and left, but his footsteps seemed a little staggering, probably because he was secretly thinking about this question.

As we said before, this is actually a simple brain teaser without any complexity. As long as you master the rules or your brain reacts faster, you can basically answer it immediately.

But people are often limited by their own thinking. After hearing this question from Li Muyun, most people will think about how many times the puppy has gone back and forth between Xiao Ming and Xiao Ming's house, and how far it has traveled each time.

Some people even wondered whether the dog was with him or at home when Xiao Ming started walking from home. If he was at home, he would make one less run, and if he followed Xiao Ming, he would make another run.

And as long as the thinking falls into such strange circles, it will naturally not consider that the running time of the puppy is actually the same as the walking time of Xiao Ming, that is to say, just multiply the speed by the time.

Of course, according to the thinking of some old scholars, there are actually other doubts about Li Muyun's question.

For example, why is Xiao Ming's home so far away from the school, will the dog be eaten on the way, why Xiao Ming has to walk, and why is the time so accurate!
Empress Changsun heard this question during lunch, and she just frowned slightly as she was picking up a spinach and putting it into her mouth, and said to Li Shimin: "Sixty miles, it's still worth it." Is it?"

"What? You, how did you figure it out?" Li Shimin almost dropped the chopsticks in his hand in surprise.

"Doesn't it count? The puppy took as much time as Xiao Ming, that is, the puppy also ran for an hour and a half. You will know if you take it at the puppy's speed." Empress Changsun gave Li Shimin a strange look. , said in a slow voice.

"So simple?" Li Shimin asked suspiciously.

Empress Changsun nodded: "It's that simple!"

(End of this chapter)