Wu Zihan looked puzzled: "Brother Jie, I'll have a Mathematical Olympiad class later. Otherwise, I'll help you get your brothers together, I have to take a leave of absence."

Ranger asked: "You also signed up for a cmo, right?"

"Yeah, I've reported it."

"CMO starts next week. Zihan, you are still going to intensive training for the mathematics class in the mathematics class. It seems that you attach great importance to it."

"It's not okay if we don't pay attention. We are already in the third year of high school, so we can get an offer early and get rid of it early."

"Okay, I won't have a meal, I'll go back to my house."

During this special period, my brother could not get the car, so Lanjie returned home to study mathematics and prepare for the CMO preliminary competition.

It is difficult to wait for the cpho score. Langjie waited and waited until the evening of September 12th. The Physics Association of Dayue Province posted a message on its official website: "The qualification line for this Cpho Dayue Province rematch is 112 points in the preliminary round (top 30%). The preliminary round marking work has ended. All participants can check the preliminary round results on the official website."

It came out, finally came out.

Ranger's hands trembled slightly, and he entered his admission ticket number on the official website.

"Come on 112, I must be taller than you!"

Query!

Discard points!

A line of words appeared on the screen: Lanjie, 198 points.

"Yeah! Victory!"

"I actually deducted two points? Who deducted me?"

"Just quit, I'll advance anyway!"

Langjie made a historic breakthrough, and he ate this supper in tears.

"198 points, right? It's quite high." Lan Jinhui expressed satisfaction.

Langjie wiped away his tears: "Sorry, I'm so excited. To be honest, this game competition preliminary round is quite simple for me. I should keep a normal mind. The day after tomorrow, I hope that I can enter the rematch as well."

Lan Jinhui asked: "What do I need to do for you in mathematics?"

"It's mainly algebra. Dad, I want to listen to your algebra lesson."

"Come on, go to class."

The son put forward his learning needs, so the father of course spared no effort to guide his son.

"Ajie, you have mastered the carry system?"

"The carry system is easy to understand. Whenever k is used, it is the same. The basic principles are the same in binary, ternary, ternary, thirty, and k-digit."

"What is the binary of 1988?"

"This is simple, 1988 is equal to brackets 11111000100 unbranch 2. It is an 11-bit binary number."

"Another ask, how many binary palindrome numbers are there in positive integers that are no more than 1988?"

"Wait a minute, I'll calculate it. I've calculated that among the positive integers that are no more than 1988, there are 92 binary palindrome numbers."

“What about 1988?”

"There are only two binary palindromes with 11 bits that exceed 1988, and they are (111110111111)2 and (111111111111)2."

"The carry system is a tool. Ajie, you can use tools proficiently, so I will focus on telling you about palindrome numbers. Our court has used supercomputing to calculate. Any natural number is added to its inverse number, and the sum obtained is then added to the inverse number of sums. In this cycle, after a limited number, you will definitely get a palindrome number in the end."

"Hey, this is very mathematical, the most theoretical kind of mathematics. Dad, you are studying this thing in the art academy?"

"The deeper you study physics, you will find that mathematics is becoming more and more important. Let's continue to talk about palindrome numbers, Ajie, do you understand the phenomenon we obtain using supercomputing? I ask you to use mathematical methods to summarize mathematical rules to explain the phenomenon of palindrome numbers. You can think this is a mathematical proof problem, just pretend I am using the question."

"How do you prove this? Can dad give me some tips?"

"Ajie, think about it for an hour first, and after an hour, I will give you a reminder."

Lan Jinhui seemed to like the number of reading texts, and he only counted the type of reading texts.

Under the guidance of my father, Lanjie learned in-depth knowledge about palindrome numbers.

As he learned, Ranjie found that counting palindromes can be easy or difficult. The lower limit of palindromes is an ordinary middle school mathematics problem, and the upper limit is a super problem that stumps all mathematicians.

There was nothing to say all night, on the morning of September 13, Lanjie came to the sheep.

The first section is Tang Xiaoyun's physics class, which may be because she bet on the right topic of the competition for the competition. She was in a good mood: "Congratulations to Lanjie, Wu Zihan, Li Zihan, Chen Zixuan, Huang Zihao... After ten students advance to the Cpho rematch, our class has the largest number of people promoted, and I am very happy. For the ten students who read the name, you don't have to teach in Class 33 classrooms recently. You go directly to the competition classroom to report to Teacher Tong Yuanhong, and go now."

Ten students strutted away from Class 33 classrooms and headed to the competition classroom on the top floor of the teaching building.

Tang Xiaoyun said to the students who stayed in the classroom: "You can prepare for the college entrance examination with peace of mind. From now until next year's college entrance examination, I will only talk about the knowledge related to college entrance examination physics. Next, let's review Newton's law of motion..."

Lanjie and ten others walked upstairs, and everyone laughed and laughed. The experience of promotion made them feel like they were strong.

Not all students have signed up for the CPO, and only 30% of the students registered have advanced to the rematch. They are indeed strong people.

"I heard that the proportion of provincial first prize is 30% and multiplied by 10%, which means that only one out of ten of us can go to the national competition." After laughing, Wu Zihan's face was solemn.

If one out of ten people is selected to go to the national competition, it must be Brother Jie!

If you can't win the national award, it's useless!

Chen Zixuan said: "Zihan, it's not what you calculated. The calculated base is not our Class 33, but all the rematch players in the province. To put it bluntly, we have to compete with other high school players for the national competition quota."

"Yes, right, right, invincible among sheep!" Wu Zihan of course would calculate such a simple math problem, and after calculating, he would be happy again.

"The advantage of our Sheep China Football Team is that we have the gold medal coach Mr. Tong Yuanhong!"

"That's right, Teacher Tong has trained iphone gold medal players like Senior Sister Yuan Ji, and Teacher Tong will definitely train us into gold medal players!"

"By the way Teacher Tang is in a hot state of plagiarism, should Teacher Tang be transferred to the Football Competition Team?"

"Teacher Tang is leaving, what should I do with Class 33?"

Everyone was talking, and in a blink of an eye, they arrived at the door of the Football Competition Classroom.

Ranjie instructed: "Brothers, don't discuss the teacher's arrangements. This kind of matter is considered by the school leaders. After entering the competition classroom, everyone should pay attention to their remarks and never embarrass us Class 3 and 3 to avoid causing unnecessary controversy."

"receive!"

"clear!"

"Get in!"

Lanjie led nine classmates in the class into the competition classroom, where Teacher Tong Yuanhong and her assistant had already been waiting.

The leader Ranjie said proudly: "Teacher Tong, a total of ten students from our Class 33 have advanced to the cpho provincial rematch. I will report to you!"

Tong Yuanhong smiled with relief and said, "Langjie, you are finally here, you didn't disappoint me. You and the classmates in your class, find a seat to sit down."
Chapter completed!