1001 brain teasers that Harvard and Cambridge students are doing

Chapter 1

challenge without limit

0000 brain teasers

An old lady got on the bus, why didn't anyone give up her seat?

Why did the frog lose to the dog in the freestyle competition?
During the intermission of the football game, the father asked his son: "What is it that is placed next to the right foot, but the left foot cannot touch it?" The son had a brainstorm and answered correctly.

do you know?What is the one thing that all people do at the same time every day?
Which wine can I not drink?
Observe the graphic below to see which figure should be placed in the blank ( )
There are still seats in the car.

Frogs can only swim breaststroke and not freestyle.

left foot.

Breathe.

iodine.

a.brain teaser

The news published in the newspaper may not be true, but what news is generally not false?

Xiao Ming saw many small birds on the big poplar tree in front of his house. He wanted to catch them all, but he didn't want to hurt them. What do you think he should do?

What has five heads, but people don't think it's weird?
What sea does not produce fish?
Which of the following options is suitable for the question mark ( )

The date in the newspaper.

Capture them with a camera.

The hand has five fingers.

Ci Hai.

c.brain teaser

What will have the least attendance?
In class, the teacher asked Dali: "Humans have evolved from crawling on all fours to walking on two legs. What is the greatest advantage?" Guess how Dali answered?
What is not a thing?
What is the competition between the rabbit and the tortoise, the rabbit will definitely win the tortoise?

Which graphic in the options should be placed in the blank ()
Dating.

Save a pair of shoes.

east-west direction.

Sit-ups, the turtle can't sit up.

a.brain teaser

What is as big as an elephant but weighs nothing?
Xiaofeng is an ordinary person, but why can she not blink for 10 hours in a row?
Pingping is 13 years old in the first year of junior high school, why is she still 13 years old in the third year of junior high school?
What is the biggest difference between electricity and lightning?
One day, Avanti came to a village.A landlord said to him: "Everyone says you are very smart. I have a piece of land (as shown in the picture below). If you can divide it into two parts of equal size and shape, I will give you the land." The old Avanti drew a line with a wooden stick in a calm manner. The landlord was dumbfounded when he saw it, so he had to fulfill his promise.Then Avanti distributed the land to the poorest two families.Do you know how Avanti divides the land?

Elephant shadow.

Xiaofeng is sleeping.

From the first day of the new year to the third day of the new year, of course he is still 13 years old.

Electricity costs money, lightning doesn't.

The dotted line in the picture below was drawn by Avanti with a wooden stick.

Brain teasers

An alcoholic reads in a book that drinking is bad for health, so he makes a decision.Do you know what this decision of the drunk is?

Pools are used to hold water, but there is one type of pool that has no water in it. What kind of pool is that?

What goes up and down hills, but never moves?
When a person goes abroad, why is he surrounded by Chinese people?

Archaeologists are conducting excavations in Greece, bringing a number of ancient ruins to light.They found many monuments there, and the following figure composed of circles and triangles appeared repeatedly among the inscriptions.

This picture can be drawn in one stroke, and no lines are repeated.Do you know how to draw?

The alcoholic decided not to read any more.

Battery.

Highway in the mountains.

Foreigners came to China.

As shown in the figure below, it can be drawn in the direction of the arrow.

Brain teasers

What hats cannot be worn?
There is a person who was born to your parents, but not your brother or sister. Who is he?
Who makes money by luck every day?
A department store was attacked by thieves, and the police immediately blocked all exits. Why did the thieves still escape?

Among the bows below, please find one that stands out from the rest.

screw cap.

yourself.

Gas carrier.

The thief escaped through the entrance.

d.Because each of the other diagrams has corresponding graphics in black and white colors: A and E, B and F, C and G.

Brain teasers

Why don't tigers eat people?
Every couple has one absolute thing in common in life and what is it?
Old Chen is an excellent novelist, why did he write for a month without even writing the title of a novel?
What is the most important thing to bring when a person who lives alone goes shopping in the store?
There are seven socks randomly placed in the picture below. Please observe carefully and judge which size is the bottom one?Can you figure it out quickly?
gecko.

Get married on the same day.

This time he wrote prose.

Bring the key.

No. 1 sock.brain teaser

Dazheng is a kind-hearted policeman, once he even robbed others, what happened?

Who often writes in white?

What kind of cake can't be eaten?
Is porridge more expensive or biscuits more expensive?
00
The picture below is the English word FOOT.Can you move a match so that it becomes another English word?

Steal the gangster's gun.

teacher.The teacher often writes with white chalk.

discus.

Of course it is rice porridge, and rare things are more expensive.

As shown below.

Brain teasers

Xiao Hua stood up as high as the dining table, and after two years, she was still able to move freely under the table. Why?
On a dark and windy night, there was a blind masseuse walking alone on the road. The strange thing was that he was blind but still held a lantern in his hand. Why?
Do you know where modern scientists are generally born?

Do you write with your left hand or with your right hand?
Can you move only two matches so that the figure below becomes eight squares?
Xiaohua is a dog.

He hoped no one else would run into him.

Born in a hospital.

Write with a pen.

Brain teasers

Who is the hairdresser's least favorite person?

What kind of enlightenment did Beethoven give us?
What is the most common in the desert?
What is the easiest scrap to make?
Carefully observe diagram A, then cover diagram A, and find out 15 places in diagram B that are different from diagram A.

bald man.

More "back" points will be more.

sand.

nonsense.

Differences are marked with an "O" as shown in the figure below.

Brain teasers

The left and right neighbors of a certain rich man have dogs. At night, the two dogs bark non-stop.The rich man who couldn't bear this kind of torture paid 100 million yuan for moving expenses, hoping that his neighbors would move out.It is true that the two neighbors moved together with their dogs, but at night, the rich man can still hear the exact same dog barking.Why is that?
The prince kissed Sleeping Beauty, why didn't Sleeping Beauty wake up?

What's the fastest way to put out a fire?
"Music prodigy" Mozart was a student of Haydn.Once, Mozart made a bet with his teacher that the teacher would definitely not be able to play a piece he wrote.

Haydn thought that the students would definitely not be able to embarrass him, so he readily agreed.It took Mozart less than 5 minutes to finish writing the score, and sent it to the teacher respectfully.

"How do you play this?" Haydn shouted after playing for a while, "When my two hands were playing to the two ends of the piano keyboard, how could a note suddenly appear in the middle of the keyboard?"

Haydn thought it was a piece that no one could play, so how did Mozart play it?
The neighbor on the left moved to the neighbor on the right, and the neighbor on the right moved to the neighbor on the left.

Sleeping Beauty is in bed.

Put a word on top of the word fire.

Mozart is really an amazing child prodigy of music. I saw him sitting in front of the piano with a smile and playing briskly. When he hit the note that the teacher said he couldn’t play, he suddenly lowered his head and popped the note with his nose. Haydn was dumbfounded by this move.brain teaser

Where is my country's wool mainly produced?
Why did Dr. Wang refuse to save him?

Who has too many eyes?
In the last years of the Eastern Han Dynasty, the world was in chaos, and the heroes were in dispute.

In the summer of this year, Cao Cao led an army of [-] to attack Zhangxiu, Wancheng, passing through a great wasteland on the way.

The weather at that time was very hot, the scorching sun scorched the earth, and the soldiers were so hot that their mouths were parched. Everyone hoped to have a mouthful of water to quench their thirst, but there was nothing in sight except a piece of barren land and flying dust. .

The soldiers were extremely depressed, and Cao Cao was also very anxious about it. He finally figured out a way to lead the soldiers out of the predicament.Do you know how?

on sheep.

Of course, there is no need to save them after death.

Pregnant women.

Cao Cao cheered up and shouted to the soldiers: "I know that there is a large plum forest in front of us, and the trees are full of sweet and sour plums. We can quench our thirst well when we get there."

Da Chen went to the store to buy something and found that the counter was empty, but Da Chen got what he wanted.So, what did Da Chen buy?
There is one thing that belongs to you, but others use it more, what is it?
Which of your clothes lasts the best?

"If you don't enter the tiger's den, how can you get a tiger's cub" which Han Dynasty envoy is it referring to?
A Zhang Qian B class super

C Ban Gu D Gan Ying

What he bought was over the counter.

your name.

The clothes you least like to wear.

B.

Brain teasers

If a piece of natural black marble is thrown into the Qiantang River on September 9th, what will happen?
A waiter serves beer to a guest. A fly falls into the glass. The waiter, the guest and the manager see it. Who is the most unlucky?

What is most afraid of seeing people in broad daylight?

What's more annoying than a crow?
There are two blind men who each bought a pair of black socks and a pair of white socks. The material and size of the eight socks are exactly the same, and each pair of socks is connected by a label paper.One day, two blind men accidentally mixed eight socks together.

Ask: How can they tell the difference between the black sox and the white sox?

Sink into the bottom of the river.

Flies are the worst, they even lost their lives.

Unexposed film.

Crow mouth.

Blind people cannot distinguish objects by sight, but their sense of touch is very sensitive.Following this line of thought, we can try to find the answer to the question, that is, besides the different colors, what are the different characteristics of black and white.Putting these two clues together, you can find a solution to the problem, that is, put four pairs of socks in the sun for the same time, because the black socks absorb more heat than the white socks, so touch the hotter one with your hands. Two pairs are black socks and the other two are white socks.brain teaser

What bag does everyone have but would rather not lend to others?

How many times a day do the hour and second hands coincide exactly?

Why was a person not injured when he was hit on the head by something falling from a height of tens of thousands of meters?
There is a thread that can only be seen but cannot be touched. What kind of thread is it?

The "chair" in the picture is overturned, who can "help" it up?Very simple, move two matches, please try it.

Head.

It is impossible to completely coincide, the length of the hour hand and the second hand are different.

What fell was snowflakes, and of course it was impossible to get hurt.

light.

As shown below.

Brain teasers

What light causes pain?
What was Adam and Eve's biggest regret when they got married?
Some people say that eating fish can prevent myopia, why?
The main reason why people swing their arms when walking is to:
AReduce energy consumption BCorrect head position

C balance walking posture D speed up walking speed
exposure.

There are no witnesses.

Have you ever seen a cat wear glasses?

c.brain teaser

Wang Fei spoke English very well, but the group of foreigners couldn't understand what he said.How is this going?

When the clock strikes 5, it’s time to eat; when the clock strikes 9, it’s time to sleep; what to do when the clock strikes 13?
People watch two people fight, but never persuade them to fight. What's the matter?

Pearls can be strung into necklaces, so what beads can't be strung into necklaces?

In one pastoral area, every time a herdsman drives a flock of sheep through a pass, half of the sheep will be confiscated and one will be returned.There is a herdsman, after passing 10 passes, there are only two sheep left. How many sheep are there in total?
Foreigners are Koreans who cannot speak English.

The clock is broken, it's time to fix it.

People are watching a boxing match.

teardrop.

At first the herdsman had only two sheep.brain teaser

There was a car that went over the bridge into the river, but the driver was not hurt, why?
Put something to see the sky but not the earth?

One day, a botanist, an atomic bomb expert, and an zoological expert were on a hot air balloon. The hot air balloon began to descend, so one expert had to be thrown away. Which one should be thrown away?

What can only be added, not subtracted?

The following is a Roman numeral calculation problem. "7-2=2" is obviously wrong. Please move two matches to make the calculation problem valid.

The man who drove the car died.

fly a kite.

Throw away the heaviest.

age.

As shown below.

Brain teasers

Lao Wang took the transportation with many people, and the people around said to him: "Old Wang, you are so brave." At last.Even so, Pharaoh was ridiculed by those who knew about it later, why?

What is not illegal to steal?

What animal does a pug look like without its tail?
What is the first animal you see when you enter the zoo?
The king of Italy said to the prince: "Here is a piece of fish. If you guess what it is, I will eat it for you. You can use any method, but there is one thing, that is, you are not allowed to ask the name of the fish." The prince could not guess what it was. fish, but he uttered a word, and the king had to let him eat the fish.Guess what the prince said?
Lao Wang wanted to jump off with a parachute on his back, but he didn't dare.

sniggering.

Still like a pug.

people.

What the Prince said was, "Let me taste this fish, and I shall know its name."

If you want to guess the name of the fish, tasting is of course a means, and it is not against the king's regulations.In fact, the purpose of the prince is to eat fish, and guessing the name of the fish is the means to eat fish.Therefore, the prince's approach is a logical shortcut, thinking that "only by guessing the name of the fish can you eat the fish." It can only show the sluggishness of thinking.brain teaser

Huahua knows the answers to the test papers, why does she keep looking at her classmates?

What are the differences between rivers, lakes and seas?
There are two kinds of beans in a bag, there are soybeans and mung beans. A person poured the beans on the ground, and he quickly separated the soybeans and mung beans. How did he divide them?

A rich man divided the property between his two sons before he died, and at the end of the division, there were still 9 gems left.He said to his two sons, I have 9 gems that I want to share with you, you put them all in 4 bags, make sure that there are gems in each bag, and the number of gems in each bag is an odd number.Whoever can do it, I will give him 5, and the other person can only get 4.Soon the younger son did it.Do you know how he does it?
Huahua is the invigilator.

The right side is different.

There is only one soybean and one mung bean.

Think outside the box, just put one gem in the first bag, three gems in the second bag, five gems in the third bag, and put all three in the fourth bag , it is easily done.

Brain teasers

Xiao Zhou jumped from an altitude of 5000 meters without a parachute, but he was safe and sound. What's going on?

It looks like an electric fan from a distance, but it looks like an electric fan up close. You say it’s an electric fan, but it doesn’t turn. Why?
The magician Peter stands on the stage with four balls in his hand. "Everyone, please look carefully." He put the ball on the palm of his hand and shouted, "Hey!" The ball was still in its original position without any change.However, when the audience saw this situation, they immediately applauded and cheered loudly.what is the root cause?

A driver was driving from Hainan to Hubei to meet a friend, and a tire blew up on the way.He removed 4 screws from the tire to replace the spare, and when he took the spare out of the trunk, he accidentally kicked 4 screws into the drain.

What should the driver do to drive the car safely to the nearest garage?
This place is 5000 meters above sea level.

The fan is not connected to power.

The magician made himself invisible.

Remove 3 screw from each of the other 1 tires and use 3 screws to secure the spare wheel to the wheel.brain teaser

What book must buy two?
What to steal without using your hands?
What does "I'm not losing weight" mean?
In ancient times, a man wanted to cross a river. He came to the river and asked loudly, "Which boat master can swim?"

As soon as the words fell, several boat bosses gathered around, and they all said: "I can swim, guest officer, take my boat!"

Only one boat boss didn't come over, so the boatman went over and asked him, "Are you good at swimming?"

The boat boss said shyly, "I can't swim."

The boatman said happily: "Well, I'll take your boat!"

Do you know why?

Marriage certificate.

sniggering.

literal meaning.

The boatman believes that the boat boss who can't swim will definitely row more carefully, and it's safer to take his boat.brain teaser

A fifty-ton oil tanker sank, what was the first thing to surface?
It costs 200 yuan to buy a pair of leather shoes. How much is it?
What can't be magnified with a magnifying glass?
Two children of the same height and weight are playing on a seesaw. What do you think will happen?

As shown in the picture below, there are two irregular iron sheets of similar size cut from the same iron sheet.May I ask, what method can be used to compare the size of their areas?
air.

None are for sale.

angle.

Had a great time.

Put these two iron sheets on the balance and weigh them, and then you can know their respective areas.The larger the area, the smaller the area, and the same weight, the same area.brain teaser

Why are women easy to be chased by men in high heels?
After the start of the long-distance race, the distance between the athletes is getting farther and farther, but the slowest one reaches the finish line first. Why?
Why can horses eat elephants?

Is Alibaba and the Forty Thieves an Eastern Night Tale or a Western Night Tale?

What's the best way not to get motion sickness?
There was a lady in Maryland, USA, because she was very disgusted with her husband John's long-term obsession with hunting and fishing, so she put an advertisement of "selling her husband" in the local newspaper to threaten Mr. John.The ad reads: "Selling my husband John today at a good price. He keeps a thoroughbred dog with him, plus a set of fishing gear. He is a good character, and his only hobbies are hunting and fishing, so about nine a year. Moon is not at home."

When John found out, he was furious and didn't know what to do, so he asked his friend Green to think of a way for him.John implemented it step by step according to Green's plan, and finally saved the marriage that was on the verge of breaking up.

If you were Green, what scheme would you arrange to help Mr. John?
Walk slowly in high heels.

The runway is round.

playing chess.

Arabian Nights.

Do not take a car.

This is an example of "alternating reality and fiction".In the first week after the advertisement was published, John's wife received five letters from women with different names and different handwritings. They all said that fish was their favorite food in their lives, and they were willing to pay twice the price that John's wife offered to buy it. Mr John.In the second week after the ad ran, more women paid higher prices for John.In the third week after the ad was published, they competed even more frantically for John.All this is actually the strategy of Green and John.Sure enough, John's wife advertised again, withdrawing the "advertisement for sale of husband."It is said that she also bought a lot of books about fishing and hunting skills, studied them carefully, and followed Mr. John to go fishing and hunting, and they never left each other.

Brain teasers

Can you turn ice into water as fast as you can?
Xiao Ming never studied but got a model student, why?
How many eggs can a person eat on an empty stomach?
There are three baskets of sealed fruit, the first basket is full of bananas, the second basket is full of pineapples, and the third basket is a mixture of pineapples and bananas.The label on the basket is mislabeled (if the label says pineapple, then you can be sure that there will not be only pineapples in the basket, there may be bananas), your task is to take out one of the baskets, take only one fruit from it, and then Relabel the three baskets of fruit with the correct labels.can you do it?
Remove the two dots of the word "ice".

Xiao Ming is deaf-mute and cannot speak, so he cannot read.

One.Because after eating one, it is not an empty stomach.

Picking one piece of fruit from the basket labeled "Mixed" tells you what fruit is in the other two baskets.Because the labels are all wrong, there must be only one fruit that says "Mixed".After determining the fruit, you will know what fruit is in each of the other two baskets. Chapter 2 Intellectual Challenge

(End of this chapter)