Chapter 215 Provincial Team (1)

A quarter of an hour later.

12 students were brought into the examination room.

The examination room for the semi-finals is a spacious and bright conference room. The space is very large. There are only 12 tables and chairs placed at the moment. The distance between each student is very far, making it seem a bit empty.

As early as in the lounge, a teacher announced the rules for the rematch to them.

There are four questions in the exam paper that will be released soon. The first two questions are worth 40 points each, and the last two questions are worth 50 points each. The total score is 180 points.

Candidates can use any argument or formula to solve or prove the proposition, and the time to answer the question is 150 minutes.

The final ranking in the semi-finals will be based directly on the scores on the roll, and the top six will enter the provincial team to prepare for the national finals.

Five minutes before the exam started, the invigilator opened the question bag and handed out the question paper, answer sheet, and draft paper.

Candidates cannot pick up their pens to answer before the exam bell rings.

After Song Ranran got the paper, she quickly glanced at it.

There is only one test paper with four questions written on it, but the answer sheet given is six pages long. There are no question numbers and no delineated answer range. They are all blank——

This means that it all depends on the students themselves.

Write as much as you can.

In addition, there are several pieces of draft paper distributed. If there is really not enough writing paper, candidates can also raise their hands and ask the invigilator to apply for more.

The four questions involve geometry, algebra and number theory, focusing on testing students' thinking ability.

The first question was geometry. Song Ranran looked at it for a moment, her eyes moved slightly, and she looked a little surprised, but it quickly faded away.

If last year's geometry paper was a dazzling and suffocating growth pattern composed of circles intersecting several circles, circles and triangles being circumscribed and inscribed, and countless straight lines, then this year's paper is a rare ""

Minimalist style”.

The only thing in the question is a triangle inscribed in a circle and a straight line intersecting it.

Prove that DE and DF pass through the pericenter and incenter of the triangle respectively.

It doesn't seem that difficult.

But it only looks like it.

How to be logically self-consistent and come up with perfect proofs is where the candidate's level can really be seen.

Song Ranran watched it for ten minutes, and now she was trying to deduce it in her mind. After she had some ideas, she took the scratch paper and wrote down what she just thought of, and slowly filled it in.

The students who can enter the league semi-finals are all capable. Even if they feel the difficulty of the questions, no one behaves badly.

The time to solve the problem passed minute by minute. The invigilator on the stage scanned the candidates below and raised the corners of his mouth slightly.

The examiner in the examination room is the president of the Provincial Mathematics Association. He has organized many league test questions and is quite experienced in setting questions.

During last year's competition, as soon as they left the examination room, many students complained on the Internet that their questions were too fancy and the geometric patterns were almost like QR codes. The key was when it was time to change the papers, the president of the Mathematics Association discovered a student's proof

The answer is extremely concise and inconsistent with the style of the reference answer, but it is still correct.

As if looking for a bug, the candidate made a hypothesis in an unexpected way among the complicated lines, and completed the proof with almost no effort.

President of the Mathematics Association:...

Good guy, wasted effort.

In short, in this year's question setting, the president must let this group of students feel the "charm" of mathematics.

Don't like complexity, right? Let's be "simple".

The smile at the corner of the examiner's mouth is subtle, and from time to time, he turns around in the examination room to watch the students' answers.

He was very light in his footsteps, and most people were focusing on thinking, and did not attract attention.

Looking left and right, he suddenly stopped next to Song Ranran and looked at her answer. It seemed to be quite interested.

The competition process Zhao Zhao refers to some aspects of the high school Olympics competition and play a little bit. Do not study it, love you!
Chapter completed!