After a while, several eunuchs brought pen, ink, paper, and inkstones and put them on the desk, Mu Jinxi took the lower pen of the brush, felt the presence of the brush, and then wrote on the paper:

Solution: If there are x lamps on the top floor of the tower, the equation can be calculated:

x+2x+4x+8x+16x+32x+64x=381

Solution x=3

A very simple equation is solved and the final answer is directly obtained.

And the prince of Carthusian didn't believe it even because even their national teacher couldn't solve this problem, and it was actually solved by this little girl.

"Miss Mu is really amazing, she guessed it, okay, my country will agree to you with a small request." The eyes of the Carthusian prince never left his approving eyes.

"I haven't thought of this request yet, but if I think of it, I will ask your country to fulfill it." Mu Jinxi said lightly.

Banquet Progress........................

A banquet changed everyone's opinion of Mu Jinxi.

During the banquet, the equation that Mu Jinxi wrote just now was curious in the eyes of everyone, especially Guan Zhibin, the right prime minister------

Guan Zhibin went straight to the topic and said excitedly: "Miss Mu, can you explain what this is all about, how it is calculated, just a few simple words, how to calculate a bunch of strange symbols?" ”

Historically, China has a multiplication table of "ninety-nine songs" very early, but the multiplication table of "ninety-nine songs" is an oral inheritance, and there is no record of how to write, just like many Chinese skills are passed down orally from beginning to end, there is no clear classic record, ninety-nine songs have no punctuation marks such as addition, subtraction, multiplication, division, etc., and even the articles that are read have no punctuation.

In the entire hall, no one looked at Mu Jinxi with a hint of curiosity, because they and the others didn't understand what was going on after seeing it.

After Mu Jinxi scratched his head and organized the wording, he briefly described the plus, multiplication, division and equations, and after speaking, Mu Jinxi elaborated carefully so as not to understand them.

Rao is like this, the ministers and Emperor Yue Yi are still confused.

Mu Jinxi elaborated on the doubts in everyone's eyes several times in a row, and only slightly alleviated, but he didn't really understand, Guan Zhibin is a person who likes to explore, and said:

"After listening to Miss Mu's words just now, punctuation, addition, subtraction, multiplication, and law have a complete system, please write Miss Mu's books and publish them again, so that everyone in the world will benefit from them."

Mu Jinxi's mind flashed and said: "For the sake of the world's readers, Prime Minister Guan is indeed willing to write a book and speak, but if I am in charge of the time spent writing books every day, there are not many things to do, and I am afraid it will take a few years to come up with a complete set of systems, I think it is better to hand it over to Prime Minister Guan and Prime Minister Liu Cheng (Left Prime Minister Liu Xiao) to compile it, wouldn't it be better?" ”

Guan Zhibin hurriedly said: "No, no, how can this kind of thing let the old man take away your reputation, once I compile it, the world thinks that this is what I came up with, but this is Miss Mu's whimsy, I can't take away Miss Mu's reputation." ”

Liu Xiao said: "I also agree that Miss Mu should be personally responsible for this matter. ”

Mu Jinxi shook his head and said, "Two prime ministers, I have more energy on Qingxi Town and am busy dealing with my own family medical hall, and I am more focused on being a doctor." ……