To ease the dreary atmosphere, Sophie spoke first: "Can you tell me your name?" ”

Liu Fang was worried that others would have to compensate him, so he naturally didn't dare to tell the truth, only to see him expecting Ai Ai to say: "I, my name is Liu ......."

Looking at Sophie's crystal clear blue eyes, Liu Fang suddenly felt that he was simply committing a crime by lying to her, in order to offset the guilt, so he comforted himself in his heart: Anyway, most foreigners put their first names in front and their surnames in the back, so it doesn't seem like an exaggeration for me to say that, right?

"Hello Liu, is what you just said true?" Sophie asked her most confused question. Pen ~ fun ~ pavilion www.biquge.info

Liu was relieved and tightened: Could it be that this woman knows that I am lying? No, she hasn't seen me before, how can she know that my real name is Liu Fang, and not Liu Fang?

"No, I wonder what Miss Sophie is referring to......?"

"That's the result, did you really calculate it yourself? And not what you see from elsewhere? ”

Liu was relieved: "Of course I calculated it myself, if you don't believe it, I can repeat what I said before." ”

Sophie felt that being idle was also idle, and it was okay to listen to it again: "Okay, you repeat it again, I'll see if there's anything different." ”

"Well, then listen up - after my calculations and research, the total number of variations of the Rubik's Cube can be as many as about 4.3 times 10 to the 19th power, and at least it only takes 20 turns to make all its colors regular."

Liu Fang had already sensed that Sophie was questioning himself, and in order to make his words more convincing, he then made a more vivid analogy of his calculations: "If every change in the Rubik's Cube is compared to a star, then its maximum change value is about equal to the sum of the number of stars contained in the 200 million galaxies, if a person verifies all the changes in the Rubik's Cube at a rate of 4 times per second, then he needs to work non-stop for 342.6 billion years, maybe until the universe is destroyed, You can't do the job, Miss Sophie, are you satisfied with my explanation? ”

"Uh...... Forehead...... Forehead ......"

Sophie could only say a complete sentence at all, and Liu Anxin secretly thought: If you add "Song to the sky, white hair floating in green water, and red anthurium plucking clear waves" at the end, you can inadvertently create an ancient poem that is widely circulated in China.

Sophie knew that Liu Fang's later words were impossible to see from books, because the Rubik's Cube and the Milky Way have nothing to do with each other, even if it is a metaphor, ordinary people will not associate them together, which shows that the other party is indeed an extremely smart child, much smarter than himself, not to mention anything else, the knowledge and calculation ability of others alone are far from being comparable to themselves.

"You're amazing!"

After a moment's pause, Sophie couldn't help but exclaim.

Being praised by Sophie, a beautiful foreign girl, Liu Fang suddenly had an inexplicable sense of achievement, he changed his previous timidity and shyness, scratched his head and said, "It's still ...... It's okay. ”

Sophie was amused by Liu Fang's stupid expression: "Hehe, you're so funny." ”

Liu Fang smirked: "Really? ”

"Well, you're really interesting, no matter who you are, you wouldn't have thought that you were so good, what grade are you in this year? You must have received a lot of praise from your teachers, right? ”

Liu Fang showed a look of loss when he heard this: "I have already dropped out of school......"

Sophie was slightly stunned: "Oh? Why would you want to drop out? ”

"Because I don't have any money, I can't afford to pay the tuition fees......"

Sophie was very surprised by this: "Don't have the money to pay for tuition? Isn't it all free? ”

Liu Fang shook his head: "Maybe your country has this policy, but we don't have it here, Huaguo is still very poor and doesn't have this ability." ”

Sophie was silent for a moment, then took out a few banknotes from her pocket and handed them to Liu Fang: "If you don't study, you will be buried in the future, which is a pity for you, this is my pocket money, you can take them to pay for tuition, just take it as my little help to you." ”

In his life, Liu Fang was the first time to meet someone else to give him money, he was too poor, in front of money, Liu Fang immediately forgot about modesty and shyness, not even polite, he took the money and put it into his pocket. As a result, the pocket was broken, and his palm suddenly came out from under the pocket.

Liu Fang retracted his hand extremely embarrassed, wanting to put the money into another pocket, but after looking around, he actually found that the pockets on his clothes were all broken, which made him even more embarrassed.

Sophie was amused by him again, Liu Fang's little face immediately turned red into a watermelon pulp, Sophie felt rude, and hurriedly apologized: "I'm sorry, I'm not laughing at you for being poor, I just think your expressions and movements are funny." ”

Liu Fang blushed and said, "It's okay, I don't mind." ”

In the end, Liu Fang stuffed the money into the heel of the shoe, and at this time Taylor happened to run back with the book.

Sophie took the book and looked at it, but she didn't see the finger prints on the page, which shocked her, and after being stunned for a while, Sophie handed the book to Taylor, turned to Liu Fang and asked, "Put Liu, can you calculate how many changes there are in the fourth-order Rubik's Cube?" ”

Liu Fang showed a puzzled look: "What is a fourth-order Rubik's Cube?" ”

Sophie put the third-order Rubik's Cube in front of Liu Fang and explained: "This is a third-order Rubik's Cube, and it has three squares on each side, and the fourth-order Rubik's Cube has one more square than each of its sides. ”

Only then did Liu Fang understand: "Oh, that's what happened, you wait, I'll tell you the answer after I've calculated it." ”

Then Liu Fang began to calculate silently, and after about five or six minutes, he came up with the result: "According to my calculations, the maximum change value of the fourth-order Rubik's Cube is about 7.4 times 10 to the 45th power, and it takes at least 40 steps or so to restore. ”

Sophie turned her head to look at Taylor, who looked at the book in his hand and replied in a strange tone: "The calculation of the total number of maximum changes is completely correct, but the number of minimum changes is not recorded in the book, according to the book...... Say ......"

"What the hell does the book say?" Sophie asked.

Taylor swallowed a mouthful of saliva: "The book says that because the amount of calculation is too large, even the computer can't get the result, so the minimum change of the fourth-order, including the fourth-order Rubik's cube and above, is still unknown......

After Taylor finished speaking, he looked at Liu Fang with wide eyes, and his heart was shocked: The Virgin Mary is above, is this kid still human?