Chapter 61

"You log in first, just wait for her to finish playing this game." Lin Xinghe nodded, and then said: "However, you have to study after playing for a while, so as not to delay your college entrance examination."

"What's the delay?" Lin Yuezhou glanced at him.

"Playing games won't delay your studies?" Lin Xinghe asked rhetorically.

Lin Yuezhou shrugged and said confidently: "I'm not a scumbag like you. Don't think I'm the same as you."

"Who says I'm a scumbag?" Lin Xinghe snorted unconvinced: "I'm not good at English, and I'm good at other subjects, okay?"

"is it?"

Lin Yuezhou snorted, and said casually: "Then I will give you a low-difficulty simulated math problem for the college entrance examination, and you can try to solve it for me now?"

"Ah? Here... come on." Lin Xinghe nodded a little unsurely.

After all, the knowledge he learned in high school has long been returned to the teacher, and most of the high-level mathematics in college have been returned. The current level of mathematics is only to solve a linear equation of two variables which is relatively easy.

"Well……"

Lin Yuezhou thought for a while, and said: "The rate of second-class products in a batch of products is 0.02. One piece is randomly selected from this batch of products each time, and drawn 100 times without replacement. X represents the number of second-class products drawn. Then What is DX equal to?"

"Um... a binomial distribution?" Lin Xinghe was taken aback, a little confused.

Although he knew that the test center of this question was the binomial distribution, he had long forgotten what the expectation formula of the binomial distribution was.

"What's the matter? You should explain it." Lin Yuezhou had a smile in his eyes.

"Cough, I'm in a bit of a urgency, let's go to the bathroom first." Lin Xinghe felt a little embarrassed, and immediately walked to the bathroom with his mobile phone.

"You don't need to look it up online. This is a topic I'm making up now. Where can you look it up?" Lin Yuezhou chuckled.

"what?"

Lin Xinghe's face froze, and he said bravely: "Who said I have to search online? I just went to the toilet, maybe my thoughts will be cleared?"

Lin Yuezhou nodded expressionlessly, "Oh, then I wish you inspiration like diabetes insipidus."

"..."

Lin Xinghe glanced at his sister angrily, and walked quickly into the bathroom.

First, he searched the Internet, but he couldn't find the same question. There were similar questions, but he didn't even remember how to calculate the expectation formula of the binomial distribution.

"Damn... Who can I ask for help?" Lin Xinghe thought for a while, and suddenly his eyes lit up, "By the way, I almost forgot."

Lin Xinghe quickly switched back to the Laoyu TV APP, and now he is still in the live broadcast room of the glasses girl.
Since this anchor is a freshman, it should be less than a year after taking the college entrance examination. The knowledge of high school should not be returned to the teacher, right?
However, Lin Xinghe still typed a line of barrage and sent out: "Does the anchor study science or liberal arts?"

This live broadcast room only has a popularity of over 4000 people, so there are naturally very few barrages. This girl with glasses was just chatting away.

At this time, when she saw the big boss with the ID 'Xinghe' speaking, her eyes immediately lit up and she said with a smile: "It turns out that the big boss Xinghe hasn't left yet." Then she said: "I'm a science major, I can't see come out?"

"How are you studying?" Lin Xinghe quickly sent another barrage.

"Me? My studies are so-so. I only scored more than 500 points in the college entrance examination, which is still a little short of the first line."

The girl with glasses said hintingly again: "I'm going to school in Wuhan now, but I don't have much interest in studying. Studying is really tiring, alas..."

"More than 500 points?"

Lin Xinghe's eyes lit up. This level is no longer a scumbag. At least he did better than him in the exam. He should be able to solve this question, right?

"It's up to you." Lin Xinghe was about to send a rocket as a reward, but after thinking about it for a while, the rocket can be seen on all platforms, which seemed a little bad, so he sent five planes out.

The plane only hangs banners in the live broadcast room, and it has no effect.

"Wow, thank you for Xinghe's plane." The glasses girl thanked her again and again, and she couldn't help showing a look of joy, "I didn't expect Xinghe boss to really give me a gift, what? Does Xinghe boss like girls with high education?"

She has been live broadcasting for almost a week, and she has not received any valuable gifts. There is no rocket, and only two planes have been received so far. These five planes are close to her one-week gift.

Five planes might not be a big deal on Laoyu TV, but she heard that Xinghe had used eleven rockets in the morning, and just now had another super rocket, which is obviously not bad for money.

She didn't expect at all that after just one chat, the other party gave her five planes. Could it be that she really has thoughts about her?

And there were few bullet screens in the live broadcast room.

"Xiaoya, by tomorrow, you will probably be able to see Big Brother Xinghe at the school gate."

"Xinghe, your wife is calling you to go home and kneel on the washboard!"

"Rich people are really bastards, their wives are so beautiful, and they want to hook up with other women?"

"Hehe, I went to your wife's live broadcast room to report, goodbye!"

"I'm going to expose you too, just wait and kneel on the keyboard!"

And the girl with glasses is a little nervous, what if this Xinghe really has thoughts about her and continues to buy gifts, what should she do?
When this thought came to her, she saw Xinghe post another barrage——

"Since the anchor is studying science, please help me solve a math problem. The second-class product rate of a batch of products is 0.02. One piece is randomly selected from this batch of products each time, and it is drawn 100 times with replacement. X Indicates the number of second-class products drawn, so what is DX equal to?"

"Huh?" The glasses girl couldn't help being stunned, what the hell?

If you ask her for WeChat, QQ, or address, she can understand, and even ask her to meet, although she is not willing, but if the boss is willing to continue to buy gifts, after she inspects her character, We can still see each other.

But... what the hell is she asking a math problem for no reason? ?
Is this treating her like a reading machine?Where can't you order?
And the barrage is also a series. . . .

"Didn't you say that you majored in science and got more than 500 points in the test? Can't you know such a simple question?" Lin Xinghe couldn't help but sent another barrage.

"Hey, let me see, of course it will."

The glasses girl looked at the question carefully, thought for a while, and said: "The number of second-class products drawn conforms to the binomial distribution. Use the expectation formula of the binomial distribution to calculate, DX=np(1-p), that is, 100× 0.02 x 0.98, so DX is 1.96."

Lin Xinghe's eyes lit up, and he immediately replied: "Thank you, goodbye."

"Huh?" The glasses girl was confused, is this the end?

System handwriting: [You get 188 yuan, which can be used for Lu Ya's mental damage fee]

There is still a mental damage fee?
Lin Xinghe was a little surprised, and didn't bother to care about the anchor, so he directly closed the live broadcast room, pressed the flush of the toilet, pretended to be in the toilet just now, opened the door, walked out of the bathroom, and returned to the living room.

"Have you figured it out?" Lin Yuezhou glanced at him.

Lin Xinghe smiled proudly: "Using the expectation formula of the binomial distribution, it is 100×0.02×0.98, so DX is 1.96, right?"

Lin Yuezhou glanced at the phone, nodded slightly and said, "It took you a minute and 30 seconds to figure out this mentally handicapped problem. Our genes are really different."

"..."

Lin Xinghe sweated secretly. If Lin Yuezhou knew that he didn't even know what the formula was, and he had to ask an anchor to figure it out, he would probably be despised to death.

"Continue, next question." Lin Yuezhou said.

"Don't, don't." Lin Xinghe felt a little pain in his head, and quickly surrendered: "You can play whatever you want, just don't delay your studies."

Lin Yuezhou nodded, snorted softly, and said, "Don't worry, no matter how poor my college entrance examination results are, I should be able to wipe you off, so you don't have to worry about it."

"Wipe me what the hell?" Lin Xinghe was taken aback.

"I just passed you by." Lin Yuezhou nodded and said, "Didn't you just pass Tsinghua University and Peking University by 250 points? I should be able to pass you by too."

"I wipe, get out..."

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(End of this chapter)

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