Chapter 23 Mathematical Olympiad



On Tuesday, the sensation caused by Wu Tong's comeback to the top with full marks in five subjects subsided a little.

After dinner, they returned to school. Class monitor Lin Yang approached Wu Tong and said, "Teacher Chen said you'll also be participating in the Mathematical Olympiad. There's an Olympiad training session tonight. Would you like to go together?"

"Okay!" Wu Tong closed the advanced mathematics book in his hand, picked up the bound draft paper and pencil case, stood up and left the classroom with Lin Yang.

Each teaching building in the school has a unique name. The building where their class is located is called Boxue Building. Minghua Building is the building in front of them. In front of it is their school playground.

The teaching and research section of Minghua Building was temporarily used as a training class for the Mathematical Olympiad. When Wu Tong and Lin Yang arrived, most of the students participating in the Mathematical Olympiad had already arrived.

There are not many students in the class, only about ten.

Except for a very small number of students who are really interested in Olympiad mathematics, the vast majority of students who come here are those who rank among the top in mathematics, and the majority of them are top students from Classes 1 and 2 whose classes are located in this building.

When Wu Tong came in, he was a stranger to everyone. The school's top math students didn't fluctuate much; many of them had participated in the Mathematical Olympiad since their freshman year of high school, so most of them were familiar to everyone.

When they saw Lin Yang coming in with her, all the students realized that this must be Wu Tong, who had become famous in the past two days and had full marks in five subjects. Lin Yang was from Class 7, and the only new face who could come with him and suddenly join in could be her.

It’s only the third week of school, and this year’s freshmen in the first year of high school have not yet made their debut.

The substitute teacher for the Mathematical Olympiad training was Mr. Duan Hongduan, whom Wu Tong had already dealt with. He had arrived early and sat down at the podium.

"Wu Tong is here!" He saw Wu Tong come in and couldn't help but smile and greet Wu Tong over. He glanced around and saw the book in Wu Tong's hand. He looked closely. Advanced mathematics? Duan Hong was stunned. That's right, for students who have fully mastered high school mathematics and want to explore higher knowledge, this book is perfect!

"Can you understand it?"

"It's okay. It was a little difficult at the beginning, but after these two days my logical thinking has been established and it's getting better!" Wu Tong nodded. Now the teachers of various subjects basically don't pay much attention to her, except that occasionally when he talks in depth and the students in the class can't answer and ask her some questions, the teachers basically don't interfere with what she learns.

She has more free time to arrange her schedule, and has already studied most of the advanced mathematics book. She expects to fully master it within this week.

"It's a good thing that you can absorb it. Take your time. There's a big difference between high school math and college math!" Duan Hong encouraged Wu Tong. "If there's anything you don't understand, you're welcome to consult me or any math teacher at school. They'll be happy to help you out!"

Thinking that Wu Tong had already started studying university mathematics textbooks, while this group of students in the class were still struggling with high school questions, he couldn't help but want to give them some stimulation.

He introduced himself to the class, "This is Wu Tong. You should all be familiar with Wu Tong. He was the only one who got a perfect score on the math test this time. He even took this year's college entrance exam on the day the results were released. I can tell you, he still got a perfect score!"

"There's always someone better than you. You should learn from Wu Tong. Don't think you're the best in the world just because you're good at math!"

"I know, Old Duan, don't you feel guilty comparing us with such a super academic god?" Those who can enter this class have good grades, and naturally have a harmonious and close relationship with the teacher. The cheerful one couldn't help but shouting mischievously!

"That's right!" The others followed suit. A genius who had gotten full marks on the college entrance exam, had learned all the knowledge in high school, and was already studying university textbooks—how could they, the scholars, compare to him? Old Duan really thought too highly of them!

"I think you guys are just too idle. You're all good at talking. Come take a practice test today!" Duan Hong was almost amused by this group of incompetent people. "Wu Tong, find a seat first. Let's do a practice test of the Mathematical Olympiad today. There are some differences between competitions and regular exams."

There were still many empty seats in the teaching and research room. Lin Yang had his own seat, and Wu Tong randomly picked an empty seat in the middle and sat down.

Duan Hong began handing out the papers. The boy in the front row turned around and handed her his paper. His glasses couldn't hide the excitement in his eyes, and his face was still a bit chubby. He greeted her with a playful smile, "Boss, I'm Sun Chao from Class 1. Please take care of me!"

Wu Tong recognized that he was the one who first spoke up and asked if Teacher Duan was guilty.

"Wu Tong from Class 7, please take care of me, Academic God!" If she remembered correctly, this was the one known as the Little Prince of Science!

He seems to get full marks in math quite often too. The guy who got 148 in math this time, is that him? His science scores are either full marks or close to full marks, but his Chinese and English are a bit lagging behind, hovering around 110. He's also a regular at the top of the class.

As the test papers were handed out, all the students began to collect their minds and focus on the papers in their hands. They were all top-ranked students in their grade, so they had some mental control.

Wu Tong examined the test paper in her hand. It wasn't very long, just four major questions. However, it covered a wide range of topics, including plane geometry, algebra, number theory, and combinatorics. Compared to the basic papers she'd taken before, the difficulty level was simply not on the same level.

The first question is about plane geometry. In the acute triangle ABC, the altitude CE on AB and the altitude BD on AC intersect at point H. The circle with diameter DE intersects AB and AC at points F and G respectively. FG intersects AH at point K. Given that BC=25, BD=20, and BE=7, find the length of AK.

My dear, there is more to this chapter. Please click on the next page to continue reading. It will be even more exciting later!

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