The second round of competition was clever. To put it bluntly, it was actually a combination of mathematics, that is, mathematics.
This round of competition was not presided over by Fu Yuewen, but another old man behind him.
"I''m the Minister of the Ministry of works, Zhang Heng. I presided over the second round of the competition. There are three questions, which have been placed in front of you. The time is two incense sticks. Please answer the questions." Zhang Heng seems not good at words. He has explained it clearly in a concise and comprehensive way.
At this time, everyone had already taken their seats. In front of everyone, there were test papers on which three math problems were transcribed.
Yan Yixu didn''t focus on the paper for the first time, but looked at Yang Xuan in the back.
After a few glances, his eyes showed a trace of provocation, and then he looked at the paper.
Yang Xuanli ignored him and looked directly at the first question.
"Now there are chickens and rabbits in the same cage. There are 35 heads on the top and 94 feet on the bottom. Ask how many chickens and rabbits are?"
Yang Xuan almost laughed. The problem of chicken and rabbit in the same cage had been done by the fifth grade students of primary school in his previous life. How could he be a serious undergraduate.
After three or two answers, he looked at the second question.
"Now there are two people, Party A and Party B, walking opposite each other. One of them starts with Party A at the same time, turns back when he meets Party B, and turns back when he meets Party A again..."
Some figures are given later. Yang Xuan sweeps it a little. If he remembers correctly, this problem is still a problem in Mathematics in the five years of primary school.
It seems that the level of the person who wrote the question will stay in the fifth grade of primary school.
But he made it difficult.
He didn''t know how to solve this problem. He was worried about how to transform all kinds of mathematical symbols in his previous life into the written expression of the world.
So he couldn''t finish the problem. He looked around and had a panoramic view of the people''s expressions.
Some frowned, some gnashed their teeth, and even some simply put their pen on the table and began to daze.
Yang Xuan smiled to himself.
The ancients paid more attention to literature than theory, and the development of mathematics was relatively backward. Even if he had almost forgotten the mathematics knowledge taught by his teachers in his previous life, I''m afraid he still had to hang the people in the world.
After sighing, he looked at the third question.
At this look, his eyebrows had wrinkled slightly.
It''s not how difficult the third question is, but the third question. In fact, it should be two questions.
"Now there is a column, I don''t know its height, how to measure it? There is another circle, I know its length of a week, how to know the left and right width?"
Scale equation and circle diameter?
These two knowledge points jumped out of Yang Xuan''s mind.
The scale equation and the diameter of the circle are the knowledge points of primary school for six years, which is one level higher than the fifth grade just now. The level has been improved.
After thinking about it, he picked up his pen and wrote a few words on the volume:
The column has shadow, which can be known by shadow measurement.
A circle has a circumference, and the circumference is measured straight.
Two simple words, if put on the earth, sixth graders can understand, but put here... I''m afraid no one can understand.
Yang xuanminrui felt that the last two questions were the key to the second round of competition.
After writing these two sentences, he got up and left his seat.
At this time, the people in the hall were still thinking hard. They were surprised to see him get up.
Yan Yixun was a little stunned. He just thought about the second question. He just had some eyebrows. Unexpectedly, Yang Xuan had handed in his paper.
I''m afraid it''s not nonsense, he thought maliciously.
He really couldn''t believe that Yang Xuan could solve these three difficult problems for him in such a short time.
No way!
He clenched his teeth secretly, withdrew his mind and concentrated on thinking.
Wang Zhuo also looked at Yang Xuan, his eyes flickering.
He was also a little uncertain about Yang Xuan.
On the contrary, Jin Chengfeng just slightly swept Yang Xuan, and then bowed his head and meditated again.
Everyone reacted differently, but they were surprised by Yang Xuan''s early submission.
Zhang Heng and several others looked at each other, and then went directly to Yang Xuan.
"Ren childe, are you..."
"Too simple, finished." Yang Xuan looked impatient.
Zhang Heng''s nose was almost crooked. These three questions were all written by him. Even he had to spend some time to solve them. In particular, the third question is extremely involved. Up to now, no one can solve it. He just wants to see if there are new ideas on the test paper this time. He doesn''t expect anyone to solve it at all.
In anger, he directly picked up Yang Xuan''s paper and read it.
His face changed completely as soon as he looked at it.
Yang Xuan''s answers to the first two questions were completely correct.
"It''s impossible!" Zhang Heng was shocked. Even if he didn''t know the specific method, it would take some effort to solve the first two questions.
However, Yang Xuan was able to do it completely in a very short time, and he couldn''t understand the methods used for a time. I''m afraid his attainments in number of techniques have left him far behind.
Shocked, he took Yang Xuan''s paper and returned to several others. With a little explanation, several old people cast their eyes.
Then, under the gaze of several people, Zhang Heng turned back and entered behind the screen.
After a long time, he came out to Yang Xuan again: "childe Ren, please follow me."
Then he took Yang Xuan directly behind the screen.
Everyone in the hall looked at each other and was at a loss.
Bypassing the screen, Yang Xuan found that there was no one inside, but a door.
As Zhang Heng pushed the door in, there was a relatively small room. At this time, there were several people in the room. Several people guarded it. There was also a door. The curtain hung from the door and could not see the situation inside.
Yang Xuan wanted to scan with his mind. He thought it over or forget it.
"You are talented and outstanding in literature. I didn''t expect you to have such deep attainments in the art of counting."
An old female voice came out from behind the curtain, speaking slowly and peacefully, but full of irresistible.
Yang Xuan felt a chill in his heart. The voice seemed to contain a trace of the power of heaven and earth, which almost solidified his blood.
The aura worked slightly. After eliminating this strange feeling, he said slowly, "thank you!"
He had a feeling that the woman behind the curtain absolutely knew his identity.
"The childe said, you know the length of the shadow, you can measure the height. I don''t know how to be specific?" the man behind the curtain asked.
Yang Xuan didn''t hide it. He said cleanly: "choose the day when there is sunshine, set up a wooden stick on the ground, measure the shadow length of the wooden stick, and then measure the shadow length of the high column, then the number of times the shadow length of the wooden stick is the same as the number of times the shadow length of the column."
The room fell into silence. After a long time, Zhang hengmeng patted his thigh: "yes, I didn''t think of it."
The man behind the curtain said, "is it possible?"
Zhang Heng blushed excitedly: "feasible, feasible, no, no, it is absolutely feasible."
He ran to Yang Xuan and shook Yang Xuan''s hand violently: "thank you, thank you..."
Yang Xuan can understand his mood. Those who study art and number are a little paranoid. The excitement and joy under the solution of a difficult problem they think hard about is unimaginable to ordinary people.
The man behind the curtain sighed and said, "young master, you are really talented. So, what about knowing the method of measuring straightness?"
Yang Xuan smiled, but did not answer, just smiled and said nothing.
This involves PI. How can he easily tell others?
"What do you want?" the people behind the curtain saw Yang Xuan smiling but silent, and already understood that he wanted to be sold.
"What would you like to exchange for?" Yang Xuan was straightforward.