my girlfriend is the student council president

Realizing that Gu Qiaoan hadn't slept anymore and sat up, Xue Changling became more imposing and turned to look at her,

"Do you dare to accept my question?"

"What question?" Gu Qiaoan smiled innocently.

"I suspect your score is fake, if you admit it, tell the teacher now!"

Just as Xue Changling finished speaking, Gu Qiaoan laughed speechlessly again,

"Squad leader, aren't you a bit too bullying? Doesn't anyone else have the ability to get full marks except you? Besides, didn't you yourself not get full marks this time?"

Xue Changling didn't get a full score in the exam, which was undoubtedly a pain in her heart, and it made her feel even more uncomfortable when Gu Qiaoan brought it out in public.

"I didn't get a full score in the test, so my score can prove that the test paper is difficult, but you got a full score in the test, Gu Qiao'an, it must have been a pain to memorize the answer in advance!"

Xue Changling's tone was contemptuous, maybe she was dazzled by jealousy, she didn't think about it, even if the previous questions could barely be memorized, it would take a lot of time to write the following big questions, let alone memorize them on purpose!

At this moment, Gu Qiaoan doesn't want to argue with her any more, no matter what you say, she won't believe anyone who doesn't believe you!

"Why, you were hit by what I said, so you dare not speak?"

Hearing this, Gu Qiaoan stretched out her hand to straighten the hair that had accidentally drifted to her forehead when she lowered her head just now, and straightened it back, revealing her fair face.

The other students watched the sudden battle in the classroom, all with an attitude of watching the show.

Gu Qiaoan just remembered the punishment, and she was still reading the self-criticism under the national flag stage. If she was cheated in the real exam today, it would be another bloodbath. The school probably couldn't hold back and drove her back!

"Gu Qiao'an, if you can't prove that you made this test paper yourself, then you are plagiarizing. I will report it to the school immediately. People like you cannot stay in our class!"

"Student Xue, calm down first..." The math teacher was about to persuade her, but Gu Qiaoan took up the conversation again.

"Then how can I prove that I really wrote it?"

When Xue Changling heard the words, she looked down at her test paper and immediately took it to heart.

"The difference between my score and your score is only the score of this fill-in-the-blank question. During the exam, I did not have so much patience because the calculation of this question was too complicated. I was afraid that I would miss the next question, so I skipped it. I don't have time to do it, since you have a perfect score, why don't you come on stage and explain it to us all?"

Hearing this, Gu Qiaoan raised her eyebrows, tilted her head and sneered,

"Oh? Then what?"

"What then?"

"You asked me to tell this question to prove my innocence, but I just said that I did it myself. If you don't believe me, you have to force me to prove it now. If I can prove that I did it later, Can you give me a reward or something? If there is nothing, then you have played me like a monkey? So, monitor, you have to take some bets to make me feel fair?"

Xue Changling originally thought that Gu Qiao'an had been tricked into it, but she didn't expect that now she has put conditions on her.

"Okay, if you get this question right, I will apologize to you, and at the same time, copy this question and the process of solving it a hundred times!"

Xue Changling didn't believe that she could answer this question at all, so the bet she placed was quite heavy.

She thought that Gu Qiaoan was doing the fill-in-the-blank questions before, so she must have just memorized them and filled them in, but now she didn't expect someone to ask her to go up and talk about them, right?

Thinking of this, Xue Changling had already thought about how she would mock Gu Qiaoan when she made a fool of herself on stage!

But when Gu Qiaoan heard Xue Changling's promise, she suddenly regained her spirits, and she couldn't arouse her interest in letting her speak on stage like this. It was already noon, so she just wanted to sleep lazily!

Now that Xue Changling said this, she had to prove herself once in a while, otherwise she would feel annoyed if people always said it behind her back! !

So, under the eyes of everyone, Gu Qiaoan passed by Xue Changling's desk with all eyes on her, and glanced at the question on which she was deducting points, and she already had an idea in her heart!

When he stepped onto the podium, the math teacher couldn't help stepping aside.

He figured it out, no matter how hard he tried to persuade them today, the two of them still had a grudge, so it would be better to let Gu Qiaoan do this question to prove himself, and there would be less gossip in the class.

Because only he knew in his heart that it was impossible for Gu Qiaoan to cheat. He decided to take this test paper as a temporary test, and no one said it beforehand. Therefore, Gu Qiaoan was able to make this paper entirely on his own ability!

Probably in this classroom, Gu Qiaoan is probably the only one who believes in him!

At this moment, Gu Qiaoan had already calmly picked up a piece of white chalk on the table, and then looked up at the students below, staring at her intently.

Gu Qiaoan still calmly wrote on the blackboard while explaining, without any stage fright,

"The squad leader made a mistake on the fourth question of filling in the blanks. Everyone can open it and take a look. If you have any questions, you can immediately stand up and correct me. Now I'm starting.

The title requires us to find the number of positive integers r with a(r)<r≤3∧2017 according to the known conditions. We can know from the definition of the sequence that a(1)=1, a(2)=2, assuming that Some integer r≥2 has a(t)=r...

……

……

It can be seen from ① that for each k=1, 2, 3...2017, r(k1), r(k2)...

……

……

The even number is one less than the odd number, so the number of positive integers we satisfy is, 3∧2017-2019/2"

After Gu Qiaoan wrote the final answer on the blackboard, the chalk in his hand just broke and fell to the ground. Gu Qiaoan didn't bother to pick it up, so he turned around and asked everyone if they had any questions?

After more than ten minutes of explanation, Xue Changling's complexion was already pale at this time, her whole body was stiff, staring at the blackboard,

"It's not wrong, it's not wrong at all...how...how is it possible?"

She suddenly felt a tightness in her chest, her head was in a mess, and then she lowered herself heavily!

Not only Xue Changling was surprised, but almost everyone in the class was also surprised. After all, the problem-solving process on the blackboard was written by Gu Qiaoan himself, and the math teacher stood aside without prompting a single word!

So Gu Qiaoan really made that test paper by himself?

"Squad leader, now that my problem is solved, shouldn't you also fulfill your promise?"

Seeing that no one was talking in the class, Gu Qiaoan knew that no one had any objections, but Xue Changling swallowed anxiously at this moment, her face was extremely ugly, and it took her a long time to squeeze out three words with dry lips,

"sorry!!"

"anything else?"

Gu Qiao'an stood on the podium, looked down at her, her eyes were full of mockery, it seemed that she didn't intend to let her go,

"After copying this question 100 times, I will give it to you immediately!"

"That's good!"

After finishing speaking, Gu Qiaoan walked away with a smile. Although she didn't want to be so aggressive, when Xue Changling slandered her just now, she didn't show mercy at all. She was not a very good person in the first place.

So, this time, give her a long memory!

And the math teacher who watched all this was very satisfied. Although the question just now was quite difficult, compared to the following questions, it was considered a child's lesson. It seems that he has been selected for this year's math competition!