&bsp;Soon, Liu Zhicheng wrote out the answer.
Among the ten days that appeared, only the day and the day appeared once. If Cheryl's birthday is or a day, then Bernard, who knows the day, can guess the month and must know what month and day Cheryl's birthday is.
Why is Albertz sure that Bernard doesn’t know Cheryl’s birthday? As mentioned above, because both month and month have only appeared once, Albertz can judge if she knows the month. So her birthday must be month or month.
Bernard's words also provide information, because only the day appears twice in the remaining days of the month and month. If Cheryl told Bernard that her birthday was a day, then Bernard would not be able to guess her birthday based on Alberts' words.
So if there are possible days, only the month, day, day and day.
After Bernard spoke, Alberts also knew about Cheryl's birthday, which reflected that Cheryl's birthday could not be in the month, because the month had two possible days, but the month had only one possibility.
So the answer is month and day.
After Liu Zhicheng finished writing, he handed the notebook directly to the old man and said to the old man: "I have already written it in detail. If you can't understand it, don't blame me."
After saying that, Liu Zhicheng closed his eyes and leaned on the back of the chair to continue to sleep. The old man held a small notebook and focused on studying it.
After a while, Liu Zhicheng slept in the city. The old man finally understood it. He suddenly realized that Liu Zhicheng's vision changed directly. In this world, this problem was a world-wide academic problem. Now it was solved by a young man in his twenties, which shocked the old man.
At this time, Zhou Xiafei happened to come over after class. After seeing the old man, Zhou Xiafei greeted the old man respectfully: "Principal, are you studying the topic again?"
After saying that, Zhou Xiafei saw Liu Zhicheng leaning on the chair, kicked Liu Zhicheng and said to Liu Zhicheng: "Get up, I don't know how to say hello when I see the principal, and I'm still sitting on the chair like an old man!"
When the principal saw Zhou Xiafei's action, he was stunned. After a while, he asked, "Young man, the wife you are waiting for is Professor Zhou, right?"
As a professor at our school, Zhou Xiafei naturally knew him, so the principal said to Liu Zhicheng.
"Yes, my wife, are you beautiful?"
Liu Zhicheng stood up, took Zhou Xiafei's hand, and said to the old man.
"It doesn't matter whether you are beautiful or not, young man, do you know what it means to solve this problem?"
The old man asked Liu Zhicheng.
Liu Zhicheng waved his hand indifferently and said to the old man: "I don't care what it means. Besides, such a question may be difficult for you, but it is too simple for me."
After Liu Zhicheng finished speaking, Zhou Xiafei pulled Liu Zhicheng's hand. She had never noticed it before, and Liu Zhicheng still had the habit of bragging.
"Okay, okay, young man, I still have a question here, which has troubled the whole world for a long time, I don't know you..." Before the old man finished speaking, Liu Zhicheng pulled Zhou Xiafei away.
Before leaving, Liu Zhicheng said to the old man: "I am here to accompany my wife, but I don't have time to help you answer the questions."
After saying that, Liu Zhicheng pulled Zhou Xiafei away.
However, since the old man knew Zhou Xiafei and the young man was Zhou Xiafei's husband, he naturally ran to him. The old man smiled slightly and left confidently.
Liu Zhicheng dealt with the matter between him and the Dianxing School at night and accompanied Zhou Xiafei during the day. This kind of life took five consecutive days. Just today, something big happened at Kyoto University, that is, the world-famous mathematician, Rajskov, with his apprentice Will James, to visit Kyoto University.
If you say you want to visit, just visit. He also put forward a conjecture. In fact, this conjecture was proposed a long time ago. Once it was proposed, it was immediately rated as one of the top ten mathematical problems in the world.
We challenge Kyoto University with our own global academic problems. Although Kyoto University can be said to be the highest-level institution in China, the teachers and students in it are still a little embarrassed when facing the world's most difficult mathematical problems because they can't solve them at all.
In fact, even Rajiskov is just a conjecture for this question, but he has conducted many studies and came up with an answer, but this answer has not been published yet.
Seeing that no one at Kyoto University could confirm his conjecture, Rajiskov was preparing to hold a speech at Kyoto University to explain his research to the majority of students.
In fact, there is one more thing he has come here, that is, it is about Zhou Xiafei. His apprentice was fascinated by Zhou Xiafei. Moreover, Rajiskov heard that Zhou Xiafei was a professor at Kyoto University, so Rajiskov wanted to come here and match the two of them.
When the president of Kyoto University heard this, he waved his hand and said to Rajiskov: "I'm very sorry. Although I shouldn't interfere too much about young people, I'm sorry to tell you that Professor Zhou is already married, and her marriage partner is not simple."
When talking about Zhou Xiafei's husband, the president of Kyoto University immediately remembered that this kid is not simple. If he is hired as an honorary professor at Kyoto University, can he be asked to prove Rajiskov's conjecture for Kyoto University?
After all, Liu Zhicheng's strength was personally seen by the president of Kyoto University. In just a few minutes, the problem that had troubled him for many years was solved. So if Zhou Xiafei's husband took action, it might be able to solve it. Kyoto University will become famous in the world and be famous in history.
So, the president of Kyoto University said to Rajiskov: "We have a young man here who is very good at studying mathematics, and he is Zhou Xiafei's husband."
Will James, who was standing next to Rajiskov, didn't care at all when he heard that Zhou Xiafei was actually married. He said to the president of Kyoto University: "I don't mind that my goddess is already married. I just need to get her people, I don't care about the others!"
This directly made the president of Kyoto University a little unhappy, but he still had a demeanor, after all, as the president of Kyoto University.
"Then let him try it. Can my guess be proved? If it can be proved, I will return to my country immediately and will never set foot in China again in my life."
"Okay, I'll try it out, can I call him."
Chapter completed!