"Are you ready?" Yu Yi asked. "Uh-huh, whatever you want!" Xining was lying on the sofa and called it a comfortable. Yu Yi said to the large group of girls behind him, "Quickly throw your questions out, as long as he can't answer, the one next to him will dance with you!" Yu Yi pointed to Lingling next to Xining, all the women screamed, and a student girl raised her hand, "I'll come, I'll come, when the water freezes, the volume increases by 1/11, and when the ice turns into water, the volume decreases by a fraction?" Yu Yi heard the question and thought to himself (Haha, volume, physics, Xining, you haven't learned it yet, right?). I can't even do it, even if you have an IQ of 200, it won't work, and it won't be difficult for you! Lingling lay on the couch with his eyes closed and smirking, waiting for Xining's answer. A minute later, the child's voice said, "Suppose the volume of water is 11, then after freezing, the volume increases by 1/11, and becomes 12."

On the contrary, the volume of ice with a volume of 12 becomes 11 after turning into water, and the volume is reduced by 1/12, and the equation indicates: Let the volume of water be V, V×(1/11)÷[V×(1+1/11)]=1/12" Yu Yi looked at the student sister nervously, and the student girl nodded helplessly, "That's right!" Yu Yi looked dangerously at Xining, and then at the crowd, hoping to quickly find a problem to stump the child. A hot girl raised her hand, "There are three people who go to the hotel and open three rooms, one room is 10 yuan, and the three rooms are 30 yuan."

The three of them opened three rooms and left, but then the boss thought: It's so late, give a discount of 5 yuan, so let the waiter send 5 yuan to the customer, but the waiter feels that it is difficult to do, how to divide the 5 yuan for three people? So he deducted two yuan privately and divided the other three yuan among the three customers. Then, the guest is equivalent to spending nine dollars per person. But then the boss found out that the waiter deducted 2 yuan privately, and asked her to return it to the guest, 3 times nine is 27, plus the waiter returned two yuan, it is 29? Q: Where did that dollar go? Yu Yi smiled again, he knew that this question had bothered him for many years, and he still didn't know how to answer it, he wanted to know what Xining's answer was. Xining fell on the sofa, "I lost interest in answering this kind of mentally handicapped question." Yu Yi smiled, "You don't know, admit defeat!" Xining glanced at him, "The fool listened carefully." 27 is the 25 charged by the boss plus 2 yuan from the waiter, so in the end, it is not 27 plus 2, but 27 plus 3 yuan found for them. Got it? Can you ask some people who have depth, they are all funny? After Xining said this, the audience became very quiet, thinking about the problem, and the women in the audience stopped dancing or drinking, and they all held their breath and thought. The whole bar was like a knowledge discussion venue, and the problem was discussed, and the bar owner felt that he was in distress about the loss tonight. A hotter dressed girl "Is any question you can ask?" Yu Yi looked at this girl's delicate figure and couldn't help but admire, Xining squinted and then rolled his eyes and didn't want to pay attention to this girl. The girl slowly spoke, "Mother and daughter, mother died, the sisters held a funeral for their mother, a very stylish man came to the funeral, my sister fell in love with him at first sight, after the funeral, the man disappeared, my sister couldn't find it, a month later, my sister killed my sister!" Why? The girl's eyes were glued to Lingling, and Yu Yi began to complain, "It's terrible, why did she kill her sister!" Be all abroad! Xining replied to the girl with a vicious look, "Because she wants to see that man again." The girl was frightened by Xining's sudden eyes, and Xining's eyes were angry (a high-quality man like my brother, do you still want to get it by any means?) Yu Yi was slow to react, "What?" Answered, I don't understand. Xining gave him a blank look, "Your IQ will never understand." The girl lowered her head, "He got it right!" Yu Yi was still wandering there, "What the hell...", such a stalemate, Xining solved all the problems, and Yu Yi was very annoyed. In the end, he had given up, and when the bar owner came out to chase people, he realized that "Xining, you deliberately messed with me, you made an appointment with Xinnuo from the beginning." Xining didn't deny it, "But you really didn't answer the elementary school question!" "This can't be an elementary school question," Yu Yi denied. Will you do it? Yu Yi thought again, how could he believe that he would not do such a terrifying IQ as Xining. I didn't say I wouldn't do it, you had to do it from the beginning. Xining made it clear that Yu Yiyi's memories seemed to be true. In the end, they came out of the bar, and Yu Yi had a hurdle in his heart that he couldn't pass, "Is that really a primary school question?" So what do you say the answer is? Yu Yi asked. Xining looked at Yu Yi pitifully, "The answer to the first question is 87, don't ask me how I came, you turn the paper upside down and read it." Yu Yi turned the paper upside down, and sure enough, "91,90,89,88,x,86" So, it's really a primary school question, and Yu Yi wants to swallow the paper. "What about the second question?" He was ready to beat himself to death. Xining said lightly, "I'll give you an analysis,

Answer: If the profit is 2 yuan, it must be the failure of the interview; So I've seen the results of your future interviews, and of course the answer of 3 yuan is also a failure, because I don't know what the additional cost is; If you answer 1 yuan, you won't be a fool. The result is: he could have earned 3 yuan directly, but after 3 transactions, the total profit became 1 yuan. So the correct answer is: -2 yuan! This question illustrates the most common phenomenon in everyday economic life: frequent trading behavior increases transaction costs. Yu Yi gasped, "You are fooling me, how can this be an elementary school question." "I never said it was an elementary school question, the first question was, but this question was not." Xining always has a way to get rid of it. "And with an IQ like yours, I'm not interested in playing it!" Xining will be another general. Yu Yi had a gut feeling that he was loveless, and Lingling asked in a low voice, "It's not good for you to hit him like this." Xining replied, "It's okay, he just lacks a blow, so that he can understand that he can't do anything without me!" Lingling gave a look and said, "It's too ruthless!" ”