A mathematician's short story-Cuomo
When Cuomo was demoted as a middle school teacher, one day in class, he was doing a special calculation on the blackboard and forgot the product of seven plus nine! When he hesitated for a long time, a classmate said the answer was 6 1, so he wrote it down accordingly. How do I know that another voice said he should write 69. Of course, Cuomo knew there was only one correct answer. As for 6 1, 69 or other figures, he can't decide. So he began to analyze, saying loudly that 6 1 is a prime number, not a product, 65 is a multiple of 5, and 67 is also a prime number. 69 seems too big, so the answer is 63! He didn't tell the students how to eliminate even numbers in the eighth grade. )
② 100-word short story of mathematical history.
1. When Cuomo was a middle school teacher, one day in class, he forgot the product of seven plus nine when he was calculating on the blackboard! When he hesitated for a long time, a classmate said the answer was 6 1, so he wrote it down accordingly.
How do I know that another voice said he should write 69. Of course, Cuomo knew there was only one correct answer. As for 6 1, 69 or other figures, he can't decide. So he began to analyze, saying loudly that 6 1 is a prime number, not a product, 65 is a multiple of 5, and 67 is also a prime number. 69 seems too big, so the answer is 63!
In 46 BC, Julius Caesar, commander-in-chief of Rome, designated the calendar. Because he was born in July, in order to show his greatness, he decided to change July to "Julian month", and all single months were stipulated as 3 1 day, and bimonthly was 30 days. In this way, there is one more day in a year. February was the month when prisoners were executed in ancient Rome. In order to reduce the number of people executed, 1 day was reduced in February to 29 days.
King Shiloh of Syracuse asked the goldsmith to build a crown with pure gold. Because it is suspected that there is silver mixed in it, Archimedes is invited to identify it. When he entered the bathtub to take a bath, the water overflowed outside the bathtub, so he realized that although the weight of objects made of different materials was the same, the discharged water would be different because of their different volumes. According to this truth, it can be judged whether the crown is adulterated.
4. When I was in Central China, in a math class, the teacher gave the students a famous question: "There is a number, three, and two; 5 digits, 5 numbers, and the remaining 3; There are seven places in seven, and there are two left. What's the date? " While everyone was thinking, Hua stood up and said, "23". His answer surprised the teacher and won his praise.
5. In 500 BC, hippasus, the younger brother of the Pythagorean school in ancient Greece, discovered an amazing fact: the diagonal of a square is incommensurable with the length of one side (if the side length of a square is 1, the length of the diagonal is not a rational number), which is incommensurable with the Pythagorean school's "Everything is a number".
This discovery surprised and angered the leaders of this school, thinking that it would shake their dominant position in academia. Furong was imprisoned and tortured in every way, and finally she was sent to the shipwreck and died.
What is the essence of incommensurability? For a long time, people have been arguing endlessly without a correct explanation. The ratio of two incommensurable degrees has always been considered unreasonable. /kloc-Leonardo da Vinci, a famous Italian painter in the 0/5th century, called it an "irrational number", and Kepler, a German astronomer in the 0/7th century, called it an "indescribable number".
However, the truth cannot be submerged after all, and it is "unreasonable" for Bishop to obliterate the truth. People named the incommensurable measure "irrational number" in memory of the respectable scholar Hibsos who devoted himself to truth-this is the origin of "irrational number".
At the same time, it also led to the first mathematical crisis.
③ Mathematical story 100 words
Good friend
Recently, a new waiter came to the "Mathematics Store". It is Xiao's Four.
One day, Little "3" went to the math shop and bought a pencil. The little "4" said, "You have to pay 1 54 yuan."
Little "3" paid 1 yuan 50 cents and asked, "How can I pay 4 cents?" Little "4" quickly said, "You don't have to pay the 4 cents." Little "3" asked doubtfully, "So you're not going to suffer?" "No, this is a rule of our shop, called" rounding ". Anything less than 4 cents is discarded. If it is more than 5 cents, it will be 1 cent. " Little "4" kindly explained. Little "3" said happily, "Thank you, that's very kind of you!"
"Yes, I like 4 very much, too." "25" ran over and said, "Because 25×4= 100, it is relatively simple to calculate, for example, 25×87×4=25×4×87, isn't it fast and simple to calculate? ! "
"Yes, really fast and easy. I also like 4. " It turned out to be "29" and "25" and quickly asked, "Hey, how can you like' 4'?" "No.29" said unhurriedly, "You don't know this. Generally speaking, February is 28 days. February is only 29 days when the Gregorian calendar year is a multiple of 4. It's only my turn once every four years. Sure, I like' 4'. However, the Gregorian calendar year is one hundred, and it must be a multiple of 400. There are only 29 days in February. This year is called leap year. "
"Ah, the use of' 4' is really great!" "25 exclaimed.
This "4" waiter is really a very gentle and likable waiter.
④ Mathematicians' stories are about 100 words (9 stories).
Hua 1
Once, while looking at the shop, Hua was solving a math problem. A lady came and wanted to buy cotton. When she asked Hua how much it was, he was completely absorbed in the problem and didn't hear what the other party said. After calculating the answer, he casually said a number. The lady thought he was talking about the price of cotton and screamed, "Why is it so expensive?" .
At this time, Hua knew that someone had come to buy cotton. When Hua sold cotton to a lady, he found that the toilet paper he used to calculate the problem was taken away by a lady. This made Hua desperate to catch up with the young lady, and he finally caught up with her. Hua said shyly, "aunt, please ... please give me back the toilet paper." The woman said angrily, "I paid for this, but." ...
Hua was in a hurry and said, "How about this! I paid for it. " When Hua reached for the money, the woman seemed to be moved by the child! He not only asked for money, but also returned the toilet paper to Hua. At this time, HuaCai slightly relieved. After returning home, I began to calculate math problems again.
2. Gaussian
Gauss's most famous story is to calculate the value of 1+2+3+ ... elementary school+100. At that time, Gauss was in primary school, and the teacher had such a problem in class, so let everyone calculate. The teacher thought it would take at least 20 minutes to get the answer, and just wanted to have a rest, but * * * said that he had worked it out and had not had time to sit in the Gaussian. The teacher was surprised and asked him how to calculate. He said that we should start with1+100 =101,and 2+99= 10 1. . . Such a * * * has 50 10 1, so the result is 5050.
There is another story. When Gauss 19 years old, he originally planned to study law. As a result, he inadvertently solved a math problem in 2000, that is, he only used a ruler and compasses to divide the circumference equally. Gauss also proved that if and only if n = 2 (2 n)+ 1, the circumference can be equally divided by a ruler n. Since then, Gauss's interest in mathematics has greatly increased, and he has embarked on the road of mathematical research and become a great mathematician.
3. Euler
Euler was born in 1707 in Basel, Switzerland. When he was a child, he liked mathematics very much. He began to teach himself algebra when he was below 10. Even several of his teachers haven't read the book, but little Euler read it with relish. When he meets something he doesn't understand, he marks it with a pen and then asks others for advice afterwards. /kloc-When he was 0/3 years old, he went to university of basel to study, which was a miracle at that time and once caused a sensation in mathematics.
Little Euler is the youngest student in this university and even in the whole Swiss university campus. In college, I got the careful guidance of johann bernoulli (1667- 1748), the most famous mathematician in calculus at that time, and gradually established a deep friendship with him.
Johann bernoulli later praised shine on you as better than the students in Lanzhou: "When I introduced Advanced Analysis, he was still a child, and you brought him up." Two years later, in the summer, Euler received a bachelor's degree from university of basel, and the following year, Euler received a master's degree in philosophy from university of basel. 1725, Euler began his mathematics career.
4. Chen Jingrun
Chen Jingrun doesn't like walking in the park or walking in the street, but he likes studying. When I study, I often forget to eat and sleep.
One day, Chen Jingrun touched his head during lunch. Alas, his hair is too long. He should get a haircut at once, or others will think he is a girl. So he left work and ran to the barber shop.
There are so many people in the barber shop that everyone cuts their hair next to each other. Chen Jingrun's brand is the small brand number 38. He thought it was too early for me to turn now. Time is so precious that I can't waste it. He hurried out of the barber shop, found a quiet place to sit down, then took out a small notebook from his pocket and recited new words in a foreign language.
5. Newton
"I must pass him!" When it comes to Newton, people may think that he must have been a "prodigy" and "genius" when he was a child, with extraordinary intelligence. In fact, Newton's childhood was thin and his mind was not smart. When I was studying in my hometown, I didn't study hard and got poor grades in my class. But he has a wide range of interests and his game skills are higher than those of ordinary children.
Usually he likes to make mechanical models, such as windmills, waterwheels, sundials and so on. His elaborate water clock has won people's praise for its accurate timing.
Sometimes, the way he plays ball is also very strange. One day, he made a lantern and hung it on the tail of a kite. When night falls, the lighted lanterns rise into the air with the help of the rising power of kites. Luminous lanterns flow in the air, and people are frightened and think there is a comet. Nevertheless, he is often discriminated against because of his poor academic performance.
At that time, the hierarchy of British feudal society was very serious. Students who study well in primary and secondary schools may discriminate against those who study poorly. There was a game between classes. When everyone was in high spirits, a good student kicked Newton and called him an idiot.
Newton's mind was angry at this * * *. He thought, we are all students. Why should I be bullied by him? I must pass him! From then on, Newton made up his mind to study hard. He gets up early and goes to bed late. Every minute counts. He studies hard and thinks hard.
After studying hard, Newton's academic performance improved continuously, and soon surpassed the classmate who had bullied him, ranking first in the class.
⑤ Fourth grade math story 100 words.
Recently, a new waiter came to the "Mathematics Store". It is Xiao's Four.
One day, Little "3" went to the math shop and bought a pencil. The little "4" said, "You have to pay 1 54 yuan."
Little "3" paid 1 yuan 50 cents and asked, "How can I pay 4 cents?" Little "4" quickly said, "You don't have to pay the 4 cents." Little "3" asked doubtfully, "So you're not going to suffer?" "No, this is a rule of our shop, called" rounding ". Anything less than 4 cents is discarded. If it is more than 5 cents, it will be 1 cent. " Little "4" kindly explained. Little "3" said happily, "Thank you, that's very kind of you!"
"Yes, I like 4 very much, too." "25" ran over and said, "Because 25×4= 100, it is relatively simple to calculate, for example, 25×87×4=25×4×87, isn't it fast and simple to calculate? ! "
"Yes, really fast and easy. I also like 4. " It turned out to be "29" and "25" and quickly asked, "Hey, how can you like' 4'?" "No.29" said unhurriedly, "You don't know this. Generally speaking, February is 28 days. February is only 29 days when the Gregorian calendar year is a multiple of 4. It's only my turn once every four years. Sure, I like' 4'. However, the Gregorian calendar year is one hundred, and it must be a multiple of 400. There are only 29 days in February. This year is called leap year. "
"Ah, the use of' 4' is really great!" "25 exclaimed.
This "4" waiter is really a very gentle and likable waiter.
⑥ 100 word mathematical story
A wonderful reportage by Mr. Xu Chi introduced a mathematician named "Chen Jingrun" to Chinese people. Anecdotes such as Mr. Chen Jingrun walking into a tree or Mr. Zhang Guanghou eating steamed bread and ink are more familiar to the people.
Because my father works in the Institute of Mathematics of the Chinese Academy of Sciences, I have lived in the dormitory of the Institute of Mathematics since I was a child, so I can witness the interesting lives of these mathematicians.
The melon seller in Wang Yuan was dumbfounded when he bought it.
Every summer in Zhongguancun, there is always a big watermelon stall at the entrance of the 82nd floor. The stall owner is a man with a crooked neck, surnamed Wei. You don't have to knock on the door to pick watermelons. You can stick watermelons on your ears. This is a shoo-in. About 1987 or 1988, my father asked me to buy watermelons, so I got on the bus and went straight to Wei Biaobiao's melon shed-after all, his melons were good. Seeing a lot of people buying it, I'm ready to squeeze in. Suddenly I saw two familiar figures picking watermelons. who is it? Mathematicians Wang Yuan and his wife calculate the price while choosing.
Wei's crooked neck watermelon sells well, and it is inevitable that there will be some "pranks". There is no need to weigh, and it is divided into big melons and small melons, one for big melons in 3 yuan and one for small melons 1 yuan. Seeing that the size difference between big melon and small melon is not very big, many people try their best to squeeze into small melon.
Mrs. Wang seems to be the same, but she heard Mr. Wang Yuan say, "Let's buy the big one."
"The big one is three times more expensive ..." Mrs. Wang hesitated. "The large value is less than the low value," said Mr. Wang.
Mrs. Wang picked two big melons, paid the money and watched others grab the small ones. She seems hesitant. Seeing her hesitation, Mr. Wang smiled and said, "What melon did you eat? Eat volume, not area. The radius of that small melon is slightly weaker than 2/3 of that of the big melon, but its volume is calculated in cubic. The small volume is less than 30% of the big one, of course, buying a big one will earn. "
Mrs. Wang nodded and shook her head again: "You have miscalculated. The skin of a big watermelon is thick, but that of a small watermelon is thin. If you calculate the amount, I am afraid that you will still suffer from buying a big one. "
But seeing that Mr. Wang had answers, he nodded and said, "Hey, don't forget that the skin of that small watermelon is three melons, and the big watermelon is only 1. If you have more skin, you can calculate the surface area again. "
Madam Wang said, "I don't care about headaches." Two men carried watermelons home, gaping at Wei's crooked neck.
Zhong Jiaqing is "ashamed to meet people"
Researcher Zhong Jiaqing and my father used to be project partners. Zhong is chivalrous and upright, daring to say and do, knowing people and being good at their duties.
One day, my father's math school distributed oranges to everyone with boxes. There were many people living in the school bungalow dormitory, so Mr. Zhong took a few classmates and sent them to everyone on a scooter. On that hot day, Mr. Zhong went shirtless, leaving only a two-finger vest. He likes swimming and is tanned all over. He seemed to have something to say to my dad, so he sent the students and the scooter away. He helped move oranges into my house, grabbed an orange and peeled it with his mouth. A little girl with bright eyes came over and asked, Grandpa, do you know where Mr. Zhong Jiaqing Zhong is?
Father listened, was about to introduce, and stopped. Although pedantic, he is not stupid. Look at Mr. Zhong. He is tanned like a black charcoal head, with two fingers on his vest and big underpants, and an orange in his mouth. What image is this ...? Fortunately, my father didn't say anything, and teacher Zhong will take over soon-well, he doesn't live in this hospital. The little girl said, Grandpa, I just met his student and said he was here. Can you help me see if he is in this hospital? Please, I want to find a chance to meet Professor Zhong. I come from Wuhan.
Ah ... Miss Zhong doesn't seem to know how to answer. He looked back and saw my dad, like a savior, pointing to my dad and saying, alas, I ride a tricycle and don't know any Zhong Jiaqing. Ask him. He lives here and may know. Say that finish, Mr. Zhong turned and ran, leaving my dad there.
What do you want from him? I'm from Wuhan, and I'm going to take the postgraduate exam. Do you know Professor Zhong? Oh, yes. Do you know him?
Sure, look at my bag. Opening the bag, my father saw a thick book clipping, all of which were reports and photos of Mr. Zhong attending the meeting and awarding prizes. Mr. Zhong looks radiant in a suit and tie.
My dad is only embarrassed. The little girl also asked: where do the researchers in your academy of sciences live? I have been here for several days. Why haven't I met any professors? At that time, there was an orange Mover behind her, a researcher named Lu Yiqi, who was also the image of a two-fingered vest. ...
At least I coaxed my little girl away. As soon as my father told Mr. Zhong, Mr. Zhong jumped up. No, no, I didn't see this student that day! My dad said, if someone goes in, can you not go in? Miss Zhong was very upset in those days, and she was relieved until the list came out and the little girl's score was not online. Later, the little girl went to Lanzhou and wrote to Miss Zhong many times, asking questions and expressing her admiration. Miss Zhong responded enthusiastically and seriously, giving her all the help and advice, but she refused to see the student until her death.
⑦ Mathematicians' stories are in urgent need, within 100 words, concise and detailed.
Galileo questioned authority.
/kloc-At the age of 0/7, Galileo was admitted to the University of Pisa as a medical major.
Once in class, Professor Biro gave a lecture on embryology. He said: "Whether a mother gives birth to a boy or a girl is determined by her father's strength. When the father is strong, the mother gives birth to a boy; If the father is weak, the mother will have a daughter. "
As soon as Professor Biro's voice dropped, Galileo raised his hand and said, "Teacher, I have a question. My neighbor, the man is very strong, but his wife has given birth to five daughters in a row. This is just the opposite of what the teacher said. How to explain this? "
"I said it according to Aristotle, a famous ancient Greek scholar, and it can't be wrong!" Professor Biro tried to subdue him.
Galileo went on to say, "Is it necessary for Aristotle to insist that what he said is true? Science must conform to the facts, otherwise it is not real science. " Professor Biro was stumped by this question and could not step down.
Later Galileo was criticized by the school, but his spirit of persistence, curiosity and pursuit of truth has not changed at all. Because of this, he finally became a generation of science masters.
Little Euler doubted God.
Little Euler is studying in a missionary school. Once, he asked the teacher how many stars there were in the sky. The teacher is a believer in theology. He doesn't know how many stars there are in the sky, and the Bible doesn't answer. Without pretending to understand, the teacher replied to Euler, "It doesn't matter how many stars there are in the sky, as long as you know that the stars in the sky are inlaid by God."
Euler felt very strange: "The sky is so big and so high, and there is no escalator on the ground. How did God embed the stars on the screen one by one? " God himself put them in the sky one by one. Why did he forget the number of stars? Could God be too careless? "
The teacher was stumped again. Anger suddenly rose in my heart, not only because the children's problems prevented the teacher from stepping down, but more importantly, the teacher regarded God above everything else. Little Euler blames God for not remembering the number of stars. The implication is that he doubts almighty god.
In Euler's time, there was absolutely no doubt about God. Little Euler didn't "keep in line" with the church and God, so the teacher told him to leave school and go home. However, in little Euler's mind, the sacred aura of God disappeared. God is a loser, he thought. Why can't he even remember the stars in the sky? He thought, God is a dictator, and even asking questions has become a crime. God may be a guy made up by others and doesn't exist at all.
Top 3: Little Euler becomes a sheepfold wit.
Little Euler helped his father herd sheep and became a shepherd boy. He read a book while herding sheep.
Dad's flock increased gradually, reaching 100. The original sheepfold was a little small, so my father decided to build a new sheepfold. He measured a rectangular piece of land with a ruler, 40 meters long and 15 meters wide. He calculated that the area is exactly 600 square meters, with an average of 6 square meters per sheep. He found that his materials were only enough to enclose the fence of 100 meters. If the sheepfold is 40m long and 15m wide, its circumference is110m (15+15+40 =1/0).
Little Euler told his father that there was no need to shrink the sheepfold, but he had an idea. Father didn't believe that little Euler would have a way. I thought, "How can there be such a cheap thing in the world?" However, little Euler insisted that he would be able to kill two birds with one stone. The father finally agreed to let his son try.
Little Euler saw his father agree, stood up and ran to the sheepfold to get ready to start work. He shortened the original side length of 40 meters to 25 meters centered on the stake. Run to the other side, extend the original side length15m, and increase10m to 25m. In this way, the original planned sheepfold has become a square with a side length of 25 meters.
Father built a fence according to the sheepfold designed by little Euler. 100 meter fence is really enough, no more, no less, all used up. The area is enough, a little bigger.
Father thinks it's a pity to let such a clever child herd sheep. Later, he tried to let little Euler know the great mathematician Bernoulli. On the recommendation of mathematicians, little Euler became a college student in university of basel on 1720. This year, little Euler 13 was the youngest student in this university.
Top 4: Eight-year-old Gauss discovered the mathematical theorem.
The famous German scientist Gauss (1777 ~ 1855) was born in a poor family. Gauss learned to calculate by himself before he could speak. When he was three years old, he watched his father calculate his salary one night and corrected his father's calculation mistakes.
One day, Gauss's math teacher was very depressed. Say to the students, "You calculated the sum of 1 plus 2 plus 3 to 100 for me today. Whoever can't figure it out will be punished for not going home for lunch. "
As a result, in less than half an hour, Xiao Gao Si picked up the slate and stepped forward. "Teacher, is this the answer?"
Without looking up, the teacher waved his thick hand and said, "Go, go back!"! Wrong. "
Gauss stood still and put the slate in front of the teacher: "Teacher! I think this answer is correct. "
The math teacher wanted to shout, but he was surprised when he saw the number written on the slate: 5050. How did this 8-year-old get the answer so quickly?
Gauss explained a method he discovered, which was used by the ancient Greeks and China people to calculate the sequence1+2+3+…+n. Gauss's discovery made the teacher feel ashamed, and felt that his previous view of being arrogant and belittling poor children was wrong. He also taught seriously in the future, and often bought some math books from the city for his own study and lent them to Gauss. With his encouragement, Gauss later did some important research in mathematics.
Top 5: Chen Jingrun conquers Goldbach conjecture.
Chen Jingrun, a famous mathematician, made great contributions to overcoming Goldbach's conjecture and founded the famous "Chen Theorem", so many people affectionately called him "the prince of mathematics". But who would have thought that his achievement originated from a story?
1937, diligent Chen Jingrun was admitted to Huaying College in Fuzhou. At this time, during the period of War of Resistance against Japanese Aggression, Professor Shen Yuan, director of the Department of Aeronautical Engineering in Tsinghua University, returned to Fujian to attend the funeral, unwilling to stay in his hometown because of the war. Several universities got the news and wanted to invite Professor Shen to give lectures. He declined the invitation. As he is an alumnus of Huaying, he came to this middle school to teach mathematics to his classmates in order to report to his alma mater.
One day, Teacher Shen Yuan told us a story in math class: "A Frenchman discovered an interesting phenomenon 200 years ago: 6=3+3, 8=5+3, 10=5+5, 12=5+7, 28= 5+23. Every even number greater than 4 can be expressed as the sum of two odd numbers. Because this conclusion has not been proved, it is still a guess. Euler said: Although I can't prove it, I am sure this conclusion is correct.
It is like a beautiful light ring, shining with dazzling brilliance in front of us not far away. ..... "Chen Jingrun stare eyes, absorbed.
Today, interesting math is about 100 words.
The Butterfly Effect
Meteorologist Lorenz put forward an article entitled "Can butterflies flap their wings to cause tornadoes in taxonomic groups?" ? This paper discusses that if the initial condition of a system is a little worse, its result will be very unstable. He called this phenomenon "the butterfly effect". Just like we roll the dice twice, no matter how deliberately we roll, the physical phenomena and points thrown twice are not necessarily the same. Why did Lorenz write this paper?
This story happened in the winter of 196 1 2008. He operated the meteorological computer in the office as usual. Usually, he only needs to input meteorological data such as temperature, humidity and air pressure, and the computer will calculate the possible meteorological data at the next moment according to the built-in three differential equations, thus simulating the meteorological change map.
Pet-name ruby mathematician's short stories (100 words or less)
Gauss is the son of an ordinary couple. His mother is the daughter of a poor stonemason, although she is very clever.
, but have no education, near the right as illiteracy. Before becoming Gauss's father's second wife, she was a maid. His father used to be a gardener, a foreman, an assistant to a businessman and an appraiser of a small insurance company. It has become an anecdote that Gauss was able to correct his father's debt when he was 3 years old. He once said that he learned to calculate on Macon's pile of things. Being able to perform complex calculations in his mind is a gift from God for his life. When Gauss was 9 years old, he calculated the tasks assigned by primary school teachers in a short time: the sum of natural numbers from 1 to 100. His method is: sum 50 pairs of sequences with the structure of sum 10 1 to (1+ 100, 2+99, 3+98 ...), and get the result: 5050. However, according to a more detailed history of mathematics, Gauss solved not only 1 plus 100, but 81297+81495+...+100899 (tolerance10)
Attending a mathematician's short story of 50 ~100 words.
1 Galois was born in a small town not far from Paris. His father is the headmaster of the school and has served as mayor for many years. The special influence of family has always made Galois fearless. 1823, 12-year-old galois left his parents to study in Paris. Not content with boring classroom indoctrination, he went to find the most difficult mathematics original research by himself. Some teachers also helped him a lot. Teachers' evaluation of him is "only suitable for working in the frontier field of mathematics".
2/kloc-Rudolph, a German mathematician in the 6th century, spent his whole life calculating pi to 35 decimal places, which was later called Rudolph number. After his death, someone else carved this number on his tombstone. Jacques Bernoulli, a Swiss mathematician, studied the spiral (known as the thread of life) before his death. After his death, a logarithmic spiral was carved on the tombstone, and the inscription also read: "Although I have changed, I am the same as before." This is a pun, which not only describes the essence of spiral, but also symbolizes his love for mathematics.
3. The task of primary school teachers: the sum of natural numbers ranges from 1 to 100. Students can't figure it out. Only one student worked out the result of 5050. The teacher asked him how to calculate. The method used by students is: sum 50 pairs of series and construct it as sum 10 1 to (65438+ 100, 2+99, 3+98 ...), and at the same time get the result that this student is Gaussian. This year, he is 9 years old.
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