Chapter 167: Picasso's Crossing Problem
"Looking at the known conditions, we can easily infer that under the existing conditions, it is impossible to accurately calculate who is playing against whom in every game, which is easy to judge, right?"
True, there are too few known conditions for the order to be determined.
"He asked us for the third time, what did it mean? The third time was special!"
Xiao Cheng said and listed the conditions of the reasoning just now: "We can't determine who the referee of each game is in order, but we can determine the referee of the third game." ”
At this time, the answer is already coming out, generally only the first and last game are special, so at this time you can make a bold guess: the third game is the same as the first game, and the last game! There is only one condition that can be determined, that is, all the odd games are all refereed by one person, and this person is the referee the most, and the next game is the least!
B plays more than A, not B, A plays 15 rounds, and these 15 games must be B or C as the referee, C referees five times, B 10 times, C referees less times than B, so it's not C - the answer comes out.
There is no accurate calculation, and I don't even calculate how many games I have played in total, but from the psychological perspective of the person who made the question and take the solution of this problem as the premise, it can indeed be judged that the referee of the third game is the one who has less games, and as soon as the data is compared, the results will come out!
The reason why the Olympiad is difficult is generally not that it is difficult in any advanced mathematical theory, after all, it is a problem for junior high school students, and it is meaningless to just advance education, the key is in thinking, and thinking training is also the meaning of learning Olympiad.
A question, with almost no time to think, Xiao Cheng not only teased Fu Chenyi for a long time, but also gave two different solutions, and the latter way of thinking of "guessing the question" made everyone's eyes shine.
"Convinced?" After finishing the question, Xiao Cheng asked Fu Chenyi provocatively.
Fu Chenyi stood on the spot, but was speechless.
"It doesn't matter, now, is it my time to ask the question?"
This sentence reminded the teachers and students present that this competition is not over yet! Wen Xiaocheng has not yet come up with a question!
The full score of the Olympiad champion, the test paper that made countless candidates sink into the sand has not been able to stump Wen Xiaocheng, in his eyes, what is the problem? At this time, everyone is holding their breath and eager to try, if they can answer the questions from the Olympiad champion, they can be regarded as able to raise their eyebrows!
"Okay, then it's a game, and if others are interested, they can also answer it. ”
"Please listen to the question!" After these three words, the classroom was silent, and even Yang Liushan pricked up her ears.
"Pablo Diego Joyce Sandiego Francisco Depaola Juan-Nepomocheno Crespignano Delos Remidios Ciporiano della Sandicioma Trinidad Maria Parisio Crito Reze Blasco Picasso traveled to China on July 10, 2016 at the age of 20......"
Before the sentence was finished, half of the students in the classroom were already confused, and they listened with their ears pricked up for a long time.
"As soon as you hear the name of the protagonist, you feel that the pressure of this question is much higher than that of Xiaohong, Xiaoming and Xiaoqiang?
I miss Xiao Ming, Xiaohong and Xiaoqiang so much!
However, half of the more astute students were concentrating, and the question was automatically simplified by the brain: Picasso was 20 years old and traveled to July 10, 2016, which must have been related to age!
Of course, there are also some more clever classmates who have not relaxed their vigilance, and secretly calculated in their hearts that it is possible that this guy does not take the usual path and asks how many people have crossed in total.
Just in time for the high-spirited Fu Chenyi to hold his birthday party, he asked the 25-year-old Fu Chenyi such a question: What is your mother's favorite food?
Another known condition, Fu Chenyi was 25 years old at that time! According to the thinking method taught by Xiaocheng just now, it is already possible to guess the question at this time, and this question may ask if the two of them brought back a certain era together, how old is Picasso at this time, how old is Fu Chenyi, or according to these known conditions, Picasso was born in which year?
It shouldn't be that simple, right?
Everyone waited for Xiao Cheng, but Xiao Cheng stopped talking.
"What are you asking?" asked someone below.
"What's your mother's favorite thing to eat?"
"We're asking, what this question asks, not what Picasso asks. ”
"What is your mother's favorite thing to eat?"
Almost everyone looked at each other, closing the big list in front of them, including the useless time, beware of slow vigilance, or overturned in front of your old driver, this is your sister's Olympiad math problem?
Xiao Cheng shrugged his shoulders lightly, "Who said that it must be an Olympiad problem?"
The classmates were confused again.
Suddenly, the atmosphere in the classroom changed, and it seemed that the question made people dare not think about it, but Xiaocheng still didn't let them go, "You don't know what your mother likes to eat, how do you order food when you invite her to dinner?"
This is the easiest question, but it's also the hardest. It's simple, even if you say a kind of food casually, people can't verify it, but even if you know that this is the case, you still don't dare to jump to conclusions, so irresponsible and perfunctory.
They didn't even know what their mother's favorite food was, and almost everyone fell into self-blame.
"This question asks what your mother likes to eat the most, in fact, what I want to ask is, why do you only care about what you test in competitions and how you can get high scores, but you don't care about what your mother likes to eat? It has nothing to do with grades, right? But you have lived for fifteen or six years, and your mother has raised you for fifteen or six years, but you can't even cook a dish that your mother likes to eat, how many points can you score in your life?"
"We ...... Standing on the starting line, as soon as the starting gun of my parents and teachers sounded, I rushed forward without hesitation, I want to persevere, I want to work hard! I want to squeeze out the last trace of strength in my body, and live up to my youth -- our youth, is it just that you are chasing me?
When Xiao Cheng said this, he looked at Yang Liushan in the back row, and the content conveyed by his eyes was: You are the most beautiful scenery on the road of my life.
"We move forward, not to chase the person in front of us, nor because there are people behind us, we move forward because we know what is there, and more importantly, we are anxious to see the scenery ahead, different. ”
Xiao Cheng said, walked down from the podium, and when he passed by Fu Chenyi, he patted him on the shoulder, as if to show friendship. The classroom was silent, and many students didn't quite understand what Xiaocheng was saying, but they always thought those words were cool.
What is very surprising is that the solution ideas introduced by Xiaocheng did not spread, but the question of Picasso's crossing has become a hot search on the Internet, and "What does your mother like to eat the most?" became an annual topic for a time.
Maybe she likes to eat pork ribs, but because you like it too, she may not touch a bite of the sweet and sour pork ribs, maybe she likes to eat seafood, but when she buys the fat crab on the top, she gives you the portion in her bowl and says that she is allergic to seafood......
Do you really know what your mom likes to eat?
——————
Happy New Year, thank you for the old knife.