Chapter 20

Question 121: [Zhang, Wang, Li, and Zhao have different blood types. Zhang said: I am type A. Wang said: I am type O. Li said: I am type AB. Zhao said: I am type AB. Only one of the four people said lies. May I ask: Who told lies?]

Question 122: [Three young men fell in love with a girl at the same time. In order to decide who can marry this girl, they decided to fight with a pistol. Xiao Li's hit rate was 30%, Xiao Huang was better than him, the hit rate was 50%, and the best gunman was Kobayashi, who never made mistakes, and the hit rate was 100%. Due to this obvious fact, for fairness, they decided to follow this order: Xiao Li fired the gun first, Xiao Huang fired the second, and Kobayashi last. Then cycled like this until they were only one person left. So who among these three people has the greatest chance of survival?]

Bi Qi yawned and rubbed his eyebrows with some headaches.

"So much left!"

He visually measured the remaining thickness of this book "500 Questions for Logical Thinking" and let out a wail.

At this time, the door of Biqi's bedroom was pushed.

Bi Qi's mother walked in with a cup of hot milk and walked softly behind Bi Qi, "It's almost twelve o'clock, Xiao Qi, you are still asleep!"

"No!" Bi Qi gritted his teeth, "Ma Zhixuan had told me just now that he was almost 200 questions, so I must not fall behind!"

Biqi's mother smiled with relief. She hadn't seen her son work so hard for a long time.

"Then come on!"

"Yeah!" Bi Qi clenched his fists and was full of fighting spirit, "This time, I will definitely bring back the IMO gold medal!"

At this moment, another corner of the city.

Under the smoked dark wall, a lame desk was placed.

Under the dim light, Ma Zhengxuan patted his cheeks, dispelled his sleepiness, and continued to lie on the desk to fight against those logical reasoning issues.

…………

The next day, the Mathematics Group Office.

Gao Yunjin knocked on the door and walked in, and walked towards Gu Lu's desk.

Looking at Zhou Haihong's eyes halfway through, Zhou Haihong snorted coldly and quickly turned his head.

Gao Yunjin touched his nose and smiled embarrassedly, "Teacher Gu, that, there might be some misunderstanding between me and Teacher Zhou before, can you..."

Gu Lu shrugged, "I will try my best to help you and Teacher Zhou adjust the adjustment. But don't say it out your bold idea of ​​taking up mathematics classes!"

It is a blessing that the mathematics teacher does not occupy other teachers' classes. Before, Gao Yunjin was so brave that he wanted to occupy mathematics classes. It would be strange if Zhou Haihong was happy.

"No, no." Gao Yunjin smiled awkwardly, "With Teacher Gu, you joining, there is no need to be so troublesome."

Gao Yunjin's competition tutoring method is to win by time.

Through a lot of time tutoring and practice, improve students' math level.

Gu Lu wins by quality.

"The answers to the second test are still not ideal." Gu Lu looked at the test results of the last competition class and sighed helplessly.

"There is nothing to do about this. After all, it is brand new knowledge for most students, and it is too difficult to use it proficiently." Gao Yunjin also sighed.

Gu Lu also realized the difficulty of the problem.

The National High School Mathematics League is divided into one and two tests.

The total score is 300, including 100 points in one trial, including eight fill-in-the-blank questions and three answer questions.

The second test scored 200 points, but there were only four answers.

According to the requirements of the National High School Mathematics League Examination Latest issued by the Ministry of Education, the scope of knowledge involved in the first test shall not exceed the teaching requirements and content stipulated in the 2000 "Full-time General High School Mathematics Teaching Outline" of the Ministry of Education, but only improves the method requirements.

In other words, the scope of the exam is the same as the scope of the college entrance examination.

But the second test is different. In order to align with the International Olympic Mathematics Competition, in addition to the first test syllabus, the content was also expanded in four directions: plane geometry, algebra, number theory, and combination mathematics.

These expanded contents have not been discussed by high school teachers, which has led to extremely difficult work for most students in this regard.

Gu Lu kept tapping the table with his fingers, "Teacher Gao, in this way, in the future, you will teach the students what they tried, and I will teach the students the contents of the second test. We will try the shortest time to let the students understand the expanded content."

"Teacher Gu, is it really OK for such a short time?" Gao Yunjin hesitated.

Gu Lu held the table with both hands, full of energy, "I don't expect them to meet my requirements, but as long as there are ten people who can do it, everything we do is worth it!"

…………

In the afternoon, Gu Lu was sorting out the lesson plan for tomorrow's competition class when he suddenly heard a sound from the computer.

"Email?" Gu Lu was wondering who would send him an email at this time, but suddenly he thought of something and hurried to the computer to open the email address.

Sure enough, just like what I guessed, it was a submission reply from "Mathematical Express".

He contributed on September 7th, and today it was only September 27th.

In other words, it only took twenty days to review Gu Lu's paper.

Gu Lu quickly opened the email and read the reviewer's review opinions given to him.

Each paper in "Mathematics Express" requires at least three reviewers to review the manuscripts, so Gu Lu also received three review opinions.

The first two reviewers both gave high evaluations of Gu Lu's article "Differential Geometry of Neutron Manifolds in Four-Dimensional Minkowski Space", indicating that he could directly pass the manuscript.

However, the third reviewer put forward a revision to Gu Lu in his review opinion.

“Reviewer:  3

The  idea  in  this  paper  is  very  interesting and  can  fill  some  gaps  in  the  field  of  differential  geometry.  However,  in  my  opinion,  there  is  still  some  flaws  in  this  and   I  hope  the author can  revise  it.

1,In  the  third  part  of  the  paper,  the  study  of  time-like  hypersurfaces  in  the  four-dimensional  Minkowski  space,  the  reason  why  there is  tangent  space  in  the  two-dimensional  light  cone   should be  explained   briefly.

2,This is also  the  third  part…”

The third reviewer put forward two small opinions on Gu Lu's paper.

First, in this part of the study on class-time hypersurfaces in four-dimensional Minkowski space, it is necessary to explain the reason why two-dimensional light cones exist in tangent space.

Another point is also in the third part. The reviewer hopes that Gu Lu can simply deduce the relationship between the curvature of light in the tangent space of de Sitter Gauss.

This level of modification is not even a minor repair.

At the same time, it means that Gu Lu's paper was almost certain to be included.

In order to publish the paper as soon as possible and complete the system's side tasks, Gu Lu stopped his current work and revised the opinions put forward by the third reviewer.

Opening the document that saved the paper, Gu Lu tapped the keyboard with his fingers and became busy again.

It happened that at this time, Zhou Haihong, who was picking up water by the water dispenser, walked behind Gu Lu.

He looked at Gu Lu's computer subconsciously and saw English and mathematical symbols all over the screen.

"Teacher Gu, what are you doing?"

……………………

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Chapter completed!