Positive psychology 16.01.2018
Dear readers, who among us has not solved funny riddles at holidays or other events, and everyone will probably agree that this makes everyone present laugh like nothing else. And the point is not even to give exactly the correct answer. Individual jokers, shouting out incorrect but witty answers, stage whole performances in this way, causing even more laughter.
Although interesting logic riddles with a trick can be not only fun and funny, but also complex and serious. You can think about these things, rack your brains, and test yourself for attentiveness and intelligence. And although we have long forgotten about such a pastime, why not sometimes get together with friends and look for the correct answers to such logical puzzles?
In a word, riddles with a trick and logic can be chosen for any occasion in order to spend time both fun and useful.
Simple tricky logic riddles with answers
Simple riddles with a trick are perfect for children's matinees and fun walks with children on the weekend.
A and B were sitting on the pipe. A went abroad, B sneezed and went to the hospital. What's left on the pipe?
(Letter B, and I went to the hospital)
How to jump from a ten-meter ladder without breaking?
(Jump off the first step)
There were 3 birch trees.
Each birch has 7 large branches.
Each large branch has 7 small branches.
There are 3 apples on each small branch.
How many apples are there in total?
(Not a single one. Apples don’t grow on birch trees)
The train travels at a speed of 70 km/h. Which direction will the smoke fly?
(The train has no smoke)
Can an ostrich call itself a bird?
(No, ostriches don't talk)
What kind of dishes can you not eat anything from?
(Out of empty)
Where were potatoes first discovered?
(In the ground)
Name five days without naming them by numbers or by the names of the days of the week.
(The day before yesterday, yesterday, today, tomorrow, the day after tomorrow)
Without what can nothing ever happen?
(Untitled)
What do they always talk about in the future tense?
(About tomorrow)
How can you bow your head without lowering it down?
(By cases)
What only a father always gives to his children and what a mother can never give them?
(Surname)
The more you take from it, the bigger it becomes.
(Pit)
Complex logic riddles with a trick and answers
To guess which answer is correct, you need to be able to look at the familiar from an unusual angle. And this is a good exercise and test for the ability to expand the boundaries of thinking.
When you see everything, you don’t see her. And when you don’t see anything, you see her.
(Darkness)
One brother eats and goes hungry, and the other goes and disappears.
(Fire and smoke)
I am water and I swim on water. Who am I?
(Ice floe)
What cannot be held for even ten minutes, although it is lighter than a feather?
(Breath)
There are roads - you can’t drive, there is land - you can’t plow, there are meadows - you can’t mow, there is no water in the rivers and seas. What is this?
(Geographic map)
What can't a magnifying glass magnify in a triangle?
(Angles)
From birth, everyone is dumb and crooked.
They will stand in a row and start talking!
(Letters)
It can be light or heavy, but it weighs nothing.
It can be fast and slow, but does not walk, does not run, does not fly.
What is this?
(Music)
Lying on his back - no one needs him.
Lean it against the wall - it will come in handy.
(Ladder)
The more there are, the less weight. What is this?
(Holes)
How to put 2 liters of milk in a liter jar?
(Turn it into cottage cheese)
The same person always came to the football match. Before the game started, he guessed the score. How did he do it?
(Before the start of the game the score is always 0:0)
To start using it, you need to break it.
(Egg. It is used for cooking)
She can age in just a couple of hours. She benefits people while killing herself. Wind and water can save her from death. What is it?
(Candle)
Complex and big logic riddles with a trick
These riddles are like whole stories, but the answers to them are quite simple and logical, once you grasp their essence.
One woman lived in a twelve-room apartment. She had a clock in every room. One Saturday evening in late October, she set all the clocks to daylight saving time and went to bed. When she woke up the next morning, she discovered that only two dials showed the correct time. Explain.
(Ten of the twelve clocks were electronic. There was a power surge at night and the clocks got lost. And only two clocks were mechanical, which is why they showed the correct time the next morning)
In a certain country there are two cities. In one of them live only people who always tell the truth, in the other - only those who always lie. They all go to visit each other, that is, in any of these two cities you can meet both an honest person and a liar.
Let's say you find yourself in one of these cities. How, by asking one single question to the first person you meet, can you determine which city you are in - the city of honest people or the city of liars?
(“Are you in your city?” The answer “yes” will always mean that you are in the city of honest people, no matter who you come across)
According to some information received by the San Francisco police, one could conclude that a theft of the jewels of the millionaire's wife, Mrs. Anderson, was being prepared. Mrs. Anderson lived in one of the first-class hotels. Apparently, the criminal who planned the crime also lived here. A detective was on duty in Mrs. Anderson's room for several days in the hope of capturing the villain, but to no avail. Mrs. Anderson had already begun to make fun of him, when suddenly the following happened. In the evening someone knocked on the door of the room. Then the door opened and a man looked into the room. When he saw Mrs. Anderson, he apologized, saying that he had the wrong door.
“I was absolutely sure that this was my room,” he said embarrassedly. - After all, all the doors are so similar to one another.
Then the detective emerged from the ambush and arrested the stranger. What could convince the detective that there was an intruder in front of him?
(The man knocked. This means he was not going to his room)
The traveler did not sleep for the whole day. Finally he got to the hotel and got a room.
“Please wake me up at seven sharp,” he asked the receptionist.
“Don’t worry,” the receptionist reassured him. “I’ll definitely wake you up, just don’t forget to call me, and I’ll come and knock on your door in an instant.”
“I will be very grateful to you,” the traveler thanked him. “You’ll get twice as much in the morning,” he added, handing the receptionist a tip.
Find the mistake in this story.
(To call the receptionist, the traveler will have to wake up first)
A skyscraper with 230 floors was built in Murom. The higher the floor, the more residents. At the very top (230th floor) 230 people live. Only one lives on the first floor. Name the most pressed elevator button.
(First floor button)
Eight twin brothers escaped to a country house for the weekend, and everyone found something to do to their liking. The first is busy picking apples, the second goes fishing, the third heats the bathhouse, the fourth plays chess, the fifth cooks dinner, the sixth watches TV series about cops on his laptop all day, the seventh discovered the artist in himself and draws the surrounding landscapes. What is the eighth brother doing at this time?
(Plays chess with fourth brother)
In France, there was a literary worker who hated the Eiffel Tower, especially how terrible it looked. At the same time, when he was hungry, he always visited the catering establishment located on the first floor of this architectural symbol of Paris. How is this behavior explained?
(Only in this restaurant, looking out the window, he did not see the Eiffel Tower)
The very famous English writer Bernard Shaw once visited a restaurant with his colleague. They were talking to each other and did not want anyone to disturb them. The orchestra conductor comes up to Shaw and asks him: “What should we play in your honor?”
Shaw, of course, did not want any music and responded very wittily, he said: “I would be very grateful to you if you would play ...”
What do you think Bernard Shaw proposed to the orchestra conductor to play?
(He invited the conductor to play a game of chess)
Tricky riddles with a trick and answers
Listen carefully or read the tricky riddles yourself. Indeed, in some of them the answers lie right on the surface.
The pear is hanging - you can’t eat it. Not a light bulb.
(This is someone else's pear)
What is a dietary egg?
(This is an egg laid by a hen on a diet)
Imagine that you are sailing on the sea in a boat. Suddenly the boat begins to sink, you find yourself in the water, and sharks swim up to you. What can you do to save yourself from sharks?
(Stop imagining it)
Olga Nikolaevna finally had her dream come true: she bought herself a new bright red car. The next day, going to work, Olga Nikolaevna, moving on the left side of the road, turned left at a red light, not paying attention to the “No Turn” sign, and to top it all off, she did not fasten her seat belt.
The guard standing at the intersection saw all this, but he didn’t even stop Olga Nikolaevna to at least check her driver’s license. Why?
(Because she walked to work)
A crow is sitting on a branch. What should be done to saw off a branch without disturbing the crow?
(Wait for her to fly away)
When the ram reaches his eighth year, what will happen?
(The ninth will go)
A wild boar climbed a pine tree with four legs and came down with three. How can this be?
(Boars cannot climb trees)
A child was born into a black family in the Congo: all white, even his teeth were snow-white. What's wrong here?
(Children are born without teeth)
You are sitting on an airplane, in front of you is a horse, behind you is a car. Where are you located?
(On the carousel)
The word is given with four letters, but it can also be written with three letters.
You can usually write it in six letters and then in five letters.
Originally it contained eight letters, and occasionally consists of seven letters.
(“Given”, “it”, “usually”, “then”, “born”, “occasionally”)
The hunter walked past the clock tower. He took out a gun and fired. Where did he end up?
(To the police)
Which hand should you use to stir tea?
(Tea should be stirred with a spoon, not with your hand)
What does a watchman do when a sparrow sits on his head?
(sleeping)
What is the fear of Santa Claus coming called?
(Claustrophobia)
What's not in a woman's handbag?
(About)
New Year's dinner is being prepared. The housewife prepares the food. What does she throw into the pan before adding food?
(Sight)
3 turtles are crawling.
The first turtle says: “Two turtles are crawling behind me.”
The second turtle says: “One turtle is crawling behind me and one turtle is crawling in front of me.”
And the third turtle: “Two turtles are crawling in front of me and one turtle is crawling behind me.”
How can this be?
(Turtles crawl in a circle)
Mathematical riddles with a trick and answers
And this section contains riddles for those who love and respect mathematics. Be careful!
Which is correct? Is five plus seven "eleven" or "eleven"?
(Twelve)
There were 3 rabbits in the cage. Three girls asked to give them one rabbit each. Each girl was given a rabbit. And yet there was only one rabbit left in the cage. How did this happen?
(One girl was given a rabbit along with a cage)
Alice wrote the number 86 on a piece of paper and asked her friend Irishka: “Can you increase this number by 12 and show me the answer without crossing out or adding anything?” Irishka did it. Can you?
(Turn over the paper and you will see 98)
There are 70 sheets of paper on the table. For every 10 seconds you can count 10 sheets.
How many seconds will it take to count 50 sheets?
(20 seconds: 70 - 10 - 10 = 50)
A man bought apples for 5 rubles apiece, but sold them for 3 rubles apiece. After some time, he became a millionaire. How did he do it?
(He was a billionaire)
The professor decided to treat his friends to his signature vegetable salad. For this he needed 3 peppers and the same number of tomatoes; There are fewer cucumbers than tomatoes, but more than radishes.
How many different vegetables did the professor use in the salad?
(9)
In the room there were 12 chickens, 3 rabbits, 5 puppies, 2 cats, 1 rooster and 2 hens.
The owner came here with his dog. How many legs are there in the room?
(The owner has two legs - animals have paws)
The geese went to water in single file (one after the other). One goose looked forward - there were 17 heads in front of him. He looked back and there were 42 paws behind him. How many geese went to water?
(39: 17 ahead, 21 behind, plus that goose that turned its head)
Experienced players Kolya and Seryozha played chess, but in the five games they played, each of them blew exactly five times. How did this happen?
(Kolya and Seryozha played with a third person. Another option was to draw 5 times)
Do not write anything or use a calculator. Take 1000. Add 40. Add another thousand. Add 30. Another 1000. Plus 20. Plus 1000. And plus 10. What happened?
(5000? Incorrect. The correct answer is 4100. Try using a calculator)
How to divide the number l88 in half to get one?
(In order to get one from the number l88, you need to write this number on paper, then draw a straight line exactly in the middle of this number so that it divides the number into upper and lower parts. The result is a fraction: 100 / 100. When divided, this fraction gives unit)
A rich merchant, dying, left his sons an inheritance of a herd of 17 cows. In total, the merchant had 3 sons. The will states that the inheritance should be distributed as follows: the eldest son receives half of the entire herd, the middle son should receive a third of all cows from the herd, the youngest son should receive a ninth of the herd. How can brothers divide the herd among themselves according to the terms of the will?
(Very simple, you need to take another cow from your relatives, then the eldest son will receive nine cows, the middle one six and the youngest two cows. So - 9 + 6 + 2 = 17. The remaining cow must be returned to the relatives)
Simple and complex logic riddles with a trick will lift your spirits and help you have fun in any adult company.
What should you do when you see a green man?
(Cross the street)
Not ice, but melting, not a boat, but floating away.
(Salary)
How many programmers does it take to screw in a light bulb?
(One)
These three TV stars have been on the screen for a long time. One is called Stepan, the second is Philip. What is the name of the third one?
(Piggy)
What's the difference between a priest and a Volga?
(Pop is father, and Volga is mother)
Why did Lenin wear boots and Stalin wear boots?
(On the ground)
He may not have children, but he is still a dad. How is this possible?
(This is the Pope)
What is the difference between a women's dormitory and a men's dormitory?
(In the women's dormitory, dishes are washed after meals, and in the men's dormitory - before)
Before calling a woman a bunny, what should a man check?
(Make sure he has enough "cabbage")
Husband getting ready for work:
- Honey, clean my jacket.
Wife:
- I've already cleaned it.
- And the trousers?
- I cleaned it too.
- And the boots?
What did the wife answer?
(Do boots have pockets?)
What should you do if you get into the car and your feet can’t reach the pedals?
(Move to the driver's seat)
This section of the Razumeikin website contains exercises for children 9-10 years old that will help the child broaden his horizons and serve as a supplement to classes in school subjects. When developing a set of tasks for schoolchildren, our specialists tried to make them not only as understandable and exciting as possible, but also truly useful in practical terms.
The “Development” block presents interesting tasks for children aged 9-10 years, helping to improve logical and spatial thinking, memory, and attention. All these skills help simplify the process of mastering the school curriculum. The test tasks in the “Development” block are built in the form of an interesting online computer game for children aged 9-10 years. By completing them, little students practice counting and reading skills and strive to learn something new.
Interesting, entertaining tasks for 9-year-old children in the “Education” block will help schoolchildren consolidate the knowledge they acquired in primary school. The exercises presented here correspond to the problems found in the assessment tests. By consistently completing test tasks for children 9-10 years old, prepared by our specialists, children will be able to:
- Prepare for exams in mathematics, Russian language, reading, and the environment.
- Recall literary works covered in elementary school.
- Practice solving advanced problems in mathematics and the Russian language.
- Refresh your memory of the topics that were studied within the subject “The World Around You”.
For most problem-questions for 9-year-old children, we have provided a detailed explanation of the solution. It is given to the child if the answer he gave was incorrect or incomplete. The “Science” block includes entertaining children’s games and tasks for 10 years old, through which the child learns about chemical elements, structural features of substances, air pressure, refraction of solar rays, studies fascinating facts about our planet, etc. In most exercises Introductory information is provided, which we have presented in an accessible form. After a preliminary explanation of the task-game, children 9-10 years old are invited to start completing it.
A few words about the presentation of material
So that young students can learn information during classes, for each exercise for children 10 years old, specialists from the Razumeikin website prepared thematic pictures and voiced text. We are convinced that this approach will allow you to learn the material better. For many interesting test games for 10-year-old children, we have prepared educational videos that will help them cope with online tasks.
How are results assessed?
By coping with test tasks, 10-year-old children receive awards online: cups, medals, etc. They help increase the student’s interest in independent studies. Most exercises are graded based on how many attempts the student gets the answer correct.
At the same time, the child has the opportunity to return to completed tasks in order, for example, to improve his own results.
To determine the strengths and weaknesses in the development of 9-year-old children, we advise you to take free online tests before completing educational tasks-games. The results will help you understand which topics need to be addressed in more detail.
Logic problems - These are tasks that are aimed at developing thinking, the ability to think, and grasp the connection between concepts. They teach children to find the relationship between cause and effect and predict the outcome.
The intellectual development of a preschool child is an important step in preparing for school. Thinking is a cognitive process, the approach to which is significantly different in adults and children. An adult has a set of ready-made knowledge, but a child learns everything for the first time, so everything is interesting and entertaining for him. In this unfamiliar world, the child still does not understand everything; he asks many questions, explores on his own, and draws his own conclusions. That is why the development of logical thinking in children plays an important role in preparing for school.
Development of logical thinking through tasks and riddles.
Logical thinking is thinking based on reasoning, combining different areas of knowledge in order to ultimately formulate an answer to the question posed in the problem. All types of logical thinking are closely related to speech. Logic games and tasks are of great importance in raising and teaching children. They are interesting to the child, draw him in and make him think.
Logic problems for children
In this article I want to offer logic problems with answers for children . These are easy logic problems, some of which are familiar to us from childhood. Try to find the answer to these riddles with your children. They are selected for children of older preschool age (5-7 years), because at this age the child is already good at reasoning and thinking.
How to find last year's snow?
Go outside immediately after the start of the new year.
***
What rocks are not in the sea?
Sukhikh
***
How do day and night end?
With a soft sign
***
What will happen to a white scarf if it is dropped into the Black Sea?
It will become wet.
***
The magpie is flying, and the dog is sitting on its tail. Could it be?
Yes, the dog is sitting on its own tail, a magpie is flying nearby
***
How many nuts are there in an empty glass?
Not at all. The glass is empty.
***
What needs to be done to keep five guys in one boot?
Each of them take off a boot
***
What is 2+2*2?
Six
***
In which month does chatty Svetochka talk the least?
In February - the shortest month
***
What is yours, but others use it more often than you?
your name
***
What word always sounds wrong?
Wrong
***
A person has one, a cow has two, a hawk has none. What is this?
Letter -O-
***
A man is sitting, but you cannot sit in his place, even if he gets up and leaves. Where is he sitting?
On your knees
***
What sign should be placed between 4 and 5 so that the result is more than 4 and less than 5?
Comma
***
How to bring water in a sieve?
Freezing her.
***
Can a rooster call itself a bird?
No, because he can't speak.
***
What disease has no one on earth ever had?
Nautical
***
Is it possible to predict the score of any match before it starts?
Yes, 0 - 0
***
What can you cook but can't eat?
Lessons
***
What becomes a third larger when placed upside down?
Number 6
***
One corner of the square table was sawed off. How many corners does the table have now?
Five.
***
Which knot cannot be untied?
Railway
***
What is the cow in front and the bull behind?
Letter -O-
***
Which river is the scariest?
Tiger
***
What has no length, depth, width, height, but can be measured?
Temperature, time
***
What are all the people on earth doing at the same time?
Getting older
***
Two people were playing checkers. Each played five games and won five times. Is this possible?
Both people played different games with other people.
***
How can a thrown egg fly three meters without breaking?
You need to throw the egg more than three meters, then the first three meters it will fly intact.
***
The man was driving a large truck. The car's headlights were not on. There was no moon either. The woman began to cross the road in front of the car. How did the driver manage to see her?
It was a bright sunny day.
***
Where is the end of the world?
Where the shadow ends.
***
Man learned from spiders how to build suspension bridges, and from cats he learned the diaphragm in his camera and reflective road signs. What invention came about thanks to snakes?
Syringe.
***
What can you easily pick up from the ground, but cannot throw far?
Poplar fluff.
***
What comb can you use to comb your head?
Petushin.
***
What do you drop when you need it and pick it up when you don't?
Anchor.
***
What can travel around the world while remaining in the same corner?
Postage stamp.
***
You are sitting on an airplane, in front of you is a horse, behind you is a car. Where are you located?
On the carousel
***
What notes can be used to measure distance?
Mi-La-Mi.
***
What won't fit in the biggest pot?
Its cover.
***
Russian mystery. A wooden river, a wooden boat, and wooden smoke flowing over the boat. What is this?
Plane.
***
A satellite makes one revolution around the Earth in 1 hour 40 minutes, and another in 100 minutes. How can this be?
One hour and forty minutes is equal to one hundred minutes.
***
Name at least three animals that Moses took into his ark?
Prophet Moses did not take animals into the ark; righteous Noah did this.
***
In one hand the boy carried one kilogram of iron, and in the other the same amount of fluff. Which was heavier to carry?
Same.
***
In 1711, a new unit of 9 people appeared in each regiment of the Russian army. What is this division?
Regimental orchestra.
***
There is a well-known story about a little boy who, having received a New Year's gift, asked his mother: “Please take off the lid. I want to pet the gift.” What kind of gift is this?
Turtle.
***
Which animals always sleep with their eyes open?
Fish.
***
It is known that at one time, silkworm eggs were exported from China on pain of death. And what animal was exported from Afghanistan in 1888 with the same risk?
Afghan Hound.
***
What insects have been domesticated by humans?
Bees.
***
A problem invented by the learned monk and mathematician from Ireland Alcuin (735–804).
The peasant needs to transport a wolf, a goat and a cabbage across the river. But the boat is such that only a peasant can fit in it, and with him either one wolf, or one goat, or one cabbage. But if you leave a wolf with a goat, then the wolf will eat the goat, and if you leave a goat with cabbage, then the goat will eat the cabbage. How did the peasant transport his cargo?
Solution 1.: It is clear that we have to start with a goat. The peasant, having transported the goat, returns and takes the wolf, which he transports to the other bank, where he leaves it, but he also takes the goat and takes it back to the first bank. Here he leaves her and transports the cabbage to the wolf. Then, returning, he transports the goat, and the crossing ends safely.
Solution 2: First, the peasant again transports the goat. But the second one can take the cabbage, take it to the other bank, leave it there and return the goat to the first bank. Then transport the wolf to the other side, return for the goat and again take her to the other side.
***
In the old days in Rus', married women wore a headdress called kokoshnik, the name of which comes from the word “kokosh”, meaning animal. Which?
Chicken (remember what she says when she lays eggs?).
***
Why can't a porcupine drown?
Its needles are hollow.
***
To take a breath of air, dolphins are forced to surface every 15-30 minutes. Why don't they suffocate in their sleep?
They don't sleep at night.
***
83. Name the fifth largest country by area after Russia, China, Canada and the USA.
Brazil.
***
The man went to the market and bought a horse there for 50 rubles. But he soon noticed that the horse had become more expensive, and sold it for 60 rubles. Then he realized that he had nothing to ride on, and bought the same horse for 70 rubles. Then he thought about how not to get a scolding from his wife for such an expensive purchase, and sold it for 80 rubles. What did he earn as a result of manipulation?
Answer: -50+60-70+80=20
***
The only bird with ears?
Owl.
***
The two approached the river at the same time. The boat on which you can cross can only support one person. And yet, without outside help, everyone crossed on this boat to the other side. How did they do it?
They sailed from different shores.
***
In Chinese, the combination of three characters for "tree" means the word "forest". What does the combination of two hieroglyphs “tree” mean?
Grove.
***
Residents of Kansas are very fond of Russian nuts. What is it if it is known that we can find them in any market?
Seeds.
***
The Romans introduced a revolutionary innovation into the design of the fork - all subsequent models were just variations of the solution found. What kind of fork was there before this innovation?
One-toothed.
***
Chinese martial artists said that fighting is for fools, but victory is for smart people. And what, in their opinion, is for the wise?
World.
***
Name the language that is native to the largest number of people.
Chinese.
***
In Ancient Rus' they were called broken numbers. What are they called nowadays?
Fractions.
***
A brick weighs two kilograms and half a brick. How many kilograms does a brick weigh?
If half a brick weighs two kilograms, then a whole brick weighs four kilograms.
***
For some reason, these people, returning to their homeland, brought with them branches of exotic plants, for which they received their nickname. What kind of people are these?
Pilgrims, they brought palm leaves.
***
In terms of production volume, bananas occupy first place in the world, followed by citrus fruits. What fruits are on the third?
Apples.
***
In the US state of Arizona, they began to protect the desert from thieves. They steal something without which the desert is threatened with desolation and devastation. What do thieves take from the desert?
Cacti.
***
Name the plant that has the largest fruits.
Pumpkin.
***
Neither fish nor fowl - what was this Russian proverb originally about?
In crayfish.
***
In Spain they are called Portuguese, in Prussia - Russians. What are they called in Russia?
Cockroaches.
***
What kind of utensils make it impossible to eat anything from?
From empty
***
Who do the Malays catch with a locked bumboo cage with a live pig inside?
Pythons, having eaten a pig, could no longer get out of the cage.
***
A hedgehog has 4 g, a dog has 100 g, a horse has 500 g, an elephant has 4-5 kg, and a human has 1.4 kg. What?
Brain mass.
***
In 1825, the streets of Philadelphia were cleared of trash by domestic animals. Which ones?
Pigs.
***
Grandmother knitted scarves and mittens for her grandchildren for the winter. In total, she knitted three scarves and six mittens. How many grandchildren does grandma have?
Three grandchildren
***
What dish was invented in the 17th century by Marco Aroni?
Pasta.
***
What does any astronaut lose during a flight?
Weight.
***
As you know, all original Russian female (full) names end in either A or Z: Anna, Maria, Olga, etc. However, there is one female name that does not end in either A or Z. Name it.
Love.
***
The Gallic priests found a fail-safe way to quickly mobilize soldiers in the event of war. To do this, they sacrificed only one person. Which one?
The last one to arrive.
***
Once in the city of Nice they held a competition for the most enduring smoker. One of the participants set a record by smoking 60 cigarettes in a row. However, he did not receive the prize. Why?
He died.
***
Humans have thirteen pairs of ribs. Who has more than three hundred ribs?
At the snake.
***
Everyone knows that “you can’t wash dirty linen in public.” But what was supposed to be done with it if it couldn’t be taken out?
Burn.
***
In what place did Russian men put on hats and mittens, regardless of the time of year?
In the bathhouse.
***
How is smelt fish similar to birds?
She makes nests, laying eggs there.
***
Name an agricultural crop that is 90% burned and 10% wasted.
Tobacco.
***
The Greeks used this to protect certain parts of their body. This was made from sandalwood bark. Name it.
Sandals.
***
The first greenhouses appeared in France. Why do you think?
For growing oranges (orange - orange).
***
The owner of the largest horn is the white rhinoceros (up to 158 cm). Which animal has the softest horns?
Snail.
***
This is what football referees used before they used the whistle.
Bell.
***
What is dirty when it is white and clean when it is green?
Blackboard.
***
In practice, when moving along a curve, this ball makes 5,000 revolutions per minute, and when moving in a straight line, more than 20,000 revolutions per minute. Where is this ball located?
In a ballpoint pen.
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The great Hippocrates was asked: “Is it true that genius is a disease?” “Certainly,” replied Hippocrates, “but very rare.” What other property of this disease did Hippocrates note with regret?
Not contagious.
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What was the name of the city in England where, in 1873, the Indian game, popular to this day, was first demonstrated?
Badminton.
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Where, judging by the name, did the ancient Slavs attach the case for hunting edged weapons?
On the leg. This is a scabbard.
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The three painters had a brother, Ivan, but Ivan had no brothers. How could this be?
Ivan had three sisters.
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The Italian flag is red, white and green. What cut berry helped the Italians choose these colors?
Watermelon.
Logical problems can be considered a kind of gymnastics for the mind. Solving such problems develops logical and non-standard thinking, intelligence, and memory, which are necessary for every person. Logic problems are different. For example, mathematical, with a trick, in the form of puzzles.
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Logic problems
Task 1: Imagine that a golfer hits the ball. After the hit, the ball rolled and rolled across the field and eventually rolled not into the hole, but into a steel pipe, vertically dug deep (several meters) into the ground. The ball ended up at the very bottom of the pipe (several meters from the surface of the earth).
Can you please tell me how a golfer can get his ball out without much effort, without having to dig out such a long pipe?
Task 2: Try to understand by what rule the following number sequence is formed:
1
11
21
1211
111221
312211
13112221
1113213211
Task 3: Continue with the following sequence of letters:
S O N D I F M ...
Task 4: Alexander has his own pet store selling birds. If he puts one bird in each cage, then one bird is not enough for the cage. If Alexander places two birds in each cage, then one cage will remain free. How many cages and birds do you think are in Alexander's pet store?
Task 5: Imagine that you have a large keg of kvass. In addition, you have two empty bottles of 3 and 5 liters. How to use these bottles to measure exactly one liter of kvass?
Task 6: Alexander weighs half as much as Dmitry, and Nikolai weighs 3 times more than Alexander. Try to determine how much each of them weighs, if all together they weigh 360 kilograms?
Task 7: Below is the sequence of letters. There is no rule of order according to which this sequence is arranged. However, for completeness, two letters are missing, what are these two letters?
I S F A M O N D Y I
Answer to problem 1: The golfer needs to pour water into the pipe to the brim, then the ball will float to the surface.
Answer to problem 2: Each subsequent number describes the previous one. For example: the number in the second line “11” says that there is one unit in the previous line (1(one)1(one)); the number in the third line “21” says that there are two units in the previous line or 2(two)1(units); the number in the fourth line “1211” says that in the previous line there is one two and one one or 1(one)2(two)1(one)1(one). And so on.
Answer to problem 3: Letter "A". Here we use the sequence of the first letters in the names of the months of the year, starting from September: September, October, November, December, January, February, March. Therefore, the next letter will be “A” - April.
Answer to problem 4: Alexander has four birds and three cages in his pet store.
Answer to problem 5: First, fill a 3-liter bottle with kvass, then pour all 3 liters from the 3-liter bottle into a 5-liter bottle. Then we again pour the kvass from the keg into a 3-liter bottle. Then pour the kvass from it into a five-liter bottle until it is full. And as a result, exactly 1 liter of kvass will remain in a 3-liter bottle.
Answer to problem 6: Nikolay = 180kg, Dmitry = 120kg, Alexander = 60kg. Solution: let Alexander's weight = x (x), then Dmitry's weight = 2x, and Nikolai's weight = 3x. Therefore, we get the equation: (x + 2x + 3x) = 360kg. Equivalently: 6x = 360kg, from where x = (360kg:6) = 60kg. After this, the weight of each of them is easily calculated.
Answer to problem 7: Letters "M" and "A". The group of letters consists of the first letters of the names of the months of the year. All of them are located chaotically, but for completeness two more letters are missing (after all, there should be 12 of them).
Problems with a trick
Task 1: If Jack doesn't drink at work, then for some reason all his employees begin to think that he is a bad worker and a slacker. Why do you think?
Task 2: Three friends went to play billiards together. They stayed there for 2 hours, after which they were billed $15. Friends chipped in $5, paid $15 at the cash register and went home. But the manager of the billiard room was their friend, and when he found out that the bill was issued to his friends, he told the cashier to catch up with them and return them 5 dollars (out of friendship). The cashier decided to give only 3 dollars to his friends and take 2 for himself. He did just that. As a result, each friend paid $4, for a total of $12. Plus the cashier kept 2 dollars for himself. The total is 12 + 2 = 14 dollars. Where do you think another dollar went?
Task 3: Sveta has pets: cats and dogs. Of all her animals, only one is not a dog, and all but one of her pets are cats. How many cats and dogs do you think Sveta has?
Task 4: Imagine that you have an empty fruit basket. Nearby there is a basket twice as large in volume, which is completely filled to the top with apples. There are 240 apples in the large basket. How many apples do you think can be put in an empty basket?
Task 5: A man lives on the 17th floor. He takes the elevator to his floor only in rainy weather or when one of his neighbors is riding in the elevator with him. If the weather is good and he is alone in the elevator, then he goes to the 9th floor, and then walks up the stairs to the 17th floor... Why?
Task 6: An inspector inspecting a certain school noticed that whenever he asked the class a question, all the students raised their hands in response. Moreover, although the school teacher chose a different student each time, the answer was always correct. How did it work out?
Task 7: Returning home from fishing, the fisherman met his friend, who inquired about his catch. But, since our fisherman, in addition to fishing, was also a big fan of all kinds of riddles, he answered his friend as follows: “If half the catch and a dozen more fish were added to the number of fish I caught, then my catch would be exactly a hundred fish.” How many fish did the angler catch?
Answer to problem 1: Jack works as an alcohol taster.
Answer to problem 2: As the calculations are indicated at the end of the puzzle, it is, of course, impossible to count like that. So, the friends paid 12 dollars, of which 10 dollars went to the cash register, and 2 dollars remained with the cunning cashier. As a result, there is no missing dollar. Here is the answer to this missing dollar puzzle.
Answer to problem 3: Sveta has only one dog and only one cat.
Answer to problem 4: Only one apple, because after one apple is placed, the basket will no longer be empty.
Answer to problem 5: This man is a midget, and he can only reach the button on the 17th floor with an umbrella or asks someone to press this button.
Answer to problem 6: The teacher previously agreed with the students that they would volunteer to answer regardless of whether they knew the answer or not. But those who know the answer should raise their right hand, and those who don’t know should raise their left hand. The teacher chose a different student each time, but always the one who raised his right hand.
Answer to problem 7: Let's solve the problem from its end. Let's subtract the extra 10 fish - 90 fish remain. The number 90 contains three equal parts, two of which are the actual catch, and the third is an additional half of the actual catch. Therefore, this additional half of the catch is 90:3 = 30 fish, and the catch itself is 30x2 = 60 fish.
Challenges for ingenuity
Task 1: What's unusual about the sentence "The quick brown fox jumps over the lazy dog"? (Translation: The quick brown fox jumped over the lazy dog).
Task 2: One gentleman, showing his friend a portrait painted for him by an artist, said: “I have neither sisters nor brothers, but this man’s father was my father’s son.” Who was depicted in the portrait?
Task 3: The pilot jumped out of the plane without a parachute. How was he able to remain unharmed after landing on solid ground?
Task 4: The military camp has a square shape at its base. It was necessary to place 16 sentries in equal numbers along each of the four sides. First, the sergeant placed sentries of 5 people on each side. Then the captain came and re-positioned the same 16 sentries, 6 people on each of the 4 sides. Then the colonel came and rearranged the same 16 sentries, 7 people on each of the 4 sides. How did the sergeant, captain and colonel place the sentries along the walls of the military camp?
Task 5: Three couples (three husbands and three wives) stand on one bank of the river and want to cross to the other bank in a boat that can only accommodate two. Moreover, none of the wives wants to stay with other husbands without the presence of their husband. How can all thermal couples get to the other side using a two-seater boat?
Task 6: The beetle crawls up a tree, and during the day, in the morning, afternoon and evening, it crawls to a height of 5 meters, and at night it descends to 2 meters. Question: on what day and time will the beetle crawl to a height of 9 meters if it started crawling onto the tree on Sunday at 6 o’clock in the morning?
Task 7: People who came to one village were often surprised by the local fool. When given a choice between a shiny 50-cent coin and a wrinkled five-dollar bill, he always chose the coin, even though it was worth a tenth as much as the bill. Why did he never choose a bill?
Answer to problem 1:“The quick brown fox jumps over the lazy dog” – this sentence contains all the letters of the English alphabet.
Answer to problem 2: The portrait shows the gentleman's son.
Answer to problem 3: The plane was standing on the runway.
Answer to problem 4: The sergeant placed the sentries like this: one in the corners and three in the middle of each of the 4 sides, making 5 on each side of the camp. The captain placed the sentries like this: two in the corners and two in the middle of each of the 4 sides, making 6 on each side of the camp. The colonel arranged the sentries like this: three in the corners and one in the middle of each of the 4 sides, making 7 on each side of the camp.
Answer to problem 5: To begin with, let's designate husbands with the letters A, B, C, and let's designate wives with the letters a, b, c. Then the following actions follow in order: 1) first “a” and “b” swim to the second shore, 2) then “a” returns and takes “c” to the other shore, 3) “c” returns and stays with “C” , and “A” and “B” swim to the other shore, 4) “B” and “b” return to the first shore, “b” remains, and “B” and “C” swim to the second shore (in the end, all husbands ended up on the second bank), 5) then “a” takes “b”, 6) and finally “B” takes “c”.
Answer to problem 6: Very often they reason like this: in 24 hours a beetle crawls to a height of 3 meters (5m - 2m). Therefore, he will climb to a height of 9 meters in 3 days, i.e. by 6 a.m. Wednesday. But the more correct answer is different: at the end of the second day (Tuesday at 6 am) the beetle will be at a height of 6 meters, and on the same day it can crawl another 5 meters, which exceeds the required level of 9 meters. It is not difficult to calculate that the beetle will reach 9 meters on Tuesday at 13:12.
Answer to problem 7:“The Fool” was not so stupid: he understood that as long as he chose the 50-cent coin, people would offer him money to choose from, and if he chose the five-dollar bill, the offers of money would stop and he would receive nothing.
Math problems
Task 1: In the 19th century, one teacher asked his students to calculate the sum of all the integers from one to one hundred. There were no computers and calculators then, and the students began to conscientiously add numbers. And only one student found the correct answer in just a few seconds. It turned out to be Carl Friedrich Gauss, the future great mathematician. How did he do it?
Task 2: There are nine coins on the table. One of them is fake. How can you find a counterfeit coin using two weighings? (A counterfeit coin is lighter than a real one.)
Task 3: One fisherman bought himself a new fishing rod that was 5 feet long. He has to get home by public transport, where the rules prohibit carrying objects longer than 4 feet. How should you pack a fishing rod in order to travel on public transport without breaking the rules?
Task 4: There are 9 kg of cereal and a cup scale with weights of 50 g and 200 g. Try weighing 2 kg of this cereal in three steps.
Task 5: In one city, a new neighborhood of 100 houses was built. The sign makers made and brought a pack of new signs with the numbering of houses from 1 to 100. Count the number of all the numbers 9 found in these signs (numbers 9 and 6 are different numbers).
Task 6: When publishing the book, it took 2,775 digits to number its pages. How many pages are in the book?
Task 7: In order to get orange paint, you need to mix yellow paints (6 parts) and red paints (2 parts). How many grams of orange paint can be obtained (maximum) with 3 grams of yellow and 3 grams of red paint?
Answer to problem 1: The future mathematician identified 49 pairs of numbers: 99 and 1, 98 and 2, 97 and 3... 51 and 49. In total, each pair of numbers equaled one hundred, and there were two unpaired numbers left, 50 and 100. Therefore, 49x100+50+100=5050.
Answer to problem 2: First weighing: put three coins on each pan of the scale. If the scales are balanced, then two of the three remaining coins are taken for the second weighing. If a counterfeit coin is on the scale, then it is clear which side of the scale it is on. If the scales are balanced, then the remaining unweighted coin is counterfeit. If at the first weighing one of the cups outweighs the other, then the counterfeit coin is among the coins whose weight turns out to be less. Then, by the second weighing, we determine which of the coins is counterfeit.
Answer to problem 3: The fishing rod must be packaged in a box 4 feet long and 3 feet wide (placed diagonally across the box).
Answer to problem 4: You need to hang the cereal into two equal parts of 4.5 kg; then hang one of these parts in half again, that is, 2.25 kg each, and subtract 250 g from one of these parts using the two available weights. Thus, you will get a weight of 2 kg.
Answer to problem 5: The correct answer is 20 nines.
Answer to problem 6: The first 9 pages require 9 digits. From page 10 to page 99 (90 pages) 90x2=180 digits are required. From the 100th to the 999th page (900 pages) 900x3=2700 digits are required (300 digits for every hundred pages with three-digit numbering). Therefore, 999 pages require 2700+180+9=2889 digits. We went through (2889-2775)/3=38 pages. Total: 999-38=961 pages were in the book.
Answer to problem 7: From the conditions of the problem it is clear that yellow paint is required 3 times more than red. Therefore, having 3 grams of yellow paint available, you need to take 1 gram of red paint. That is, when mixed, you get 4 grams of orange paint.
Video
1) From four sevens you need to get the numbers 1,2,3,5. Any arithmetic operations and any parentheses are allowed.
2) Two piglets and three lambs on a farm weigh 46 kg, and three piglets and two lambs weigh 44 kg. How much does 1 pig weigh? How much does one lamb weigh?
3) They bought a notebook for Olenka. She decided to number the pages and started from the first. She had to write 39 numbers. How many pages did Olya number?
4) To the number X we added 1/3 of X, and then another 25. It turned out 33. What is the number X?
5) How to write the number 50 using three identical numbers. Did it work? And now using three identical numbers.
Write the number 100 using three hundreds.
6) Which is greater, a third of a half or a half of a third?
7) At school they gave me an example in which all odd numbers are written in blue, and all even numbers are written in yellow. And I thought: “What color will the number be - the sum of an even and an odd number?”
8) Sasha put 3 identical round parts from the designer on one bowl of a toy scale. For another bowl - 5 rectangular parts. The scales have balanced. Then he put 6 square parts instead of round ones. The scales again showed a state of balance. How many round pieces should be placed on one bowl if there are 12 square pieces on the other?
9) You are a bus driver. At the first stop, 6 men and 3 women got on and two women with children entered. On the second, one man came out and one woman entered with a dog. At the third stop, two more women got on. How old is the driver?
10) Cucumbers were pickled in a barrel. The weight of a barrel with cucumbers is 80 kg. When half of the pickled cucumbers were eaten during the fall and winter, the barrel of cucumbers began to weigh 41 kg. How much does an empty barrel weigh? How much will a barrel of cucumbers weigh if in the spring you have already eaten 2/3 of the original amount of cucumbers?
11) In the 5th group of kindergarten, 40 mittens are drying on the radiator. There are 1/5 fewer children in the 6th group than in the 5th group. How many children are in the 6th group?
12) Place “+” signs between the numbers 5,6,7,8,9,0 so that the total is 170.
13) Tolya and Vova were traveling in the same elevator. Tolya arrived on the 1st floor, and Vova - on the 12th. How could this be?
14) The children played football for 2 hours. Goalkeeper Fedya should have been home 5 hours ago, so that he could finish his homework in an hour and then come to his grandmother in the village 2 hours later to help dig potatoes. And after another 2 hours he had to board the train going back to the city. His parents are waiting for him at home at 20.00. When did the guys start playing football?
15) Vitya and Anya have pencils. If Anya gives Vitya 1 pencil, then they will have the same amount, and if Vitya gives Anya 1 pencil, then she will have twice as much as Vitya. How many pencils does each guy have?
16) Olya invited her friends to her birthday on a day off, 3 hours after the hour that follows the hour before the hour that is 11 hours after midnight. What time should the guys arrive?
17) Petya rode a scooter first 1/5 of his way, then 1/4 of the remaining, and then another half of the rest. He has 25 meters left to travel. What is Petya's whole journey like?
18) Each of the 2 stores has 120 kg of potatoes. Each bag of the second store contains 4g less potatoes than each bag of the first. Therefore, in the 2nd store there is 1 bag more than in the first. How many bags of potatoes are there in the 2nd store?
19) Masha and Dasha go towards each other and throw a ball to each other. Masha walks at a speed of 200 steps/hour, and Dasha walks at 50 steps/hour. The distance between them is 10 steps. The ball flies at a speed of 400 child steps per hour. At the last moment the ball bounced into the bushes and the girls met. How many baby steps did the ball fly?
20) Vika and Sonya have fish in their aquariums. Vika gave Sonya 2 fish, after which Vika had 3 times more fish. How many fish did each of the girls have in their aquariums at the beginning, if there were 12 fish in total?
21) Cheburashka and the crocodile Gena decided to plant an alley of linden trees. Cheburashka thought that Gena the Crocodile had so much work to do at the zoo that he should plant the trees himself. At night he took a shovel and planted all the seedlings 4 meters apart. Waking up in the morning, Gena was happy, but decided that Cheburashka had planted trees often. Together they dug up the linden trees and replanted them 6 meters apart. The first hole had already been dug. After how many meters will the holes coincide again? Solve the same problem with the numbers 8 and 12, 3 and 8, 3 and 15.
22) Three refrigerators cost as much as 9 juicers, and 2 vacuum cleaners cost as much as 1 refrigerator. One juicer costs 1 thousand rubles. How much does one vacuum cleaner cost?
23) Tea in a beautiful box costs 50 rubles. 20 kopecks A box is 1 ruble cheaper than tea. 20 kopecks How much does tea cost without a box?
24) Continue the series of numbers:
1, 3, 7, 11, 13, 17, 19, 21, 23,..., ..., ....
Write at least three numbers.
25) Sveta’s mother gave money for 3 ice creams. The girl bought a cake with 1/3 of this money, and then bought a pie with 1/3 of the remaining money. Sveta spent the rest of her money on 4 pieces of chewing gum. How much does one ice cream cost if the price of chewing gum is 10 rubles?
26) Vanya, Kolya and Sasha go to school along the same road from the same entrance, the distance from which to the school is 280 m. Having left at the same time, they followed at different speeds. When Sasha had 3 minutes left before school, Kolya and Vanya walked a total of 392 meters. When Sasha crossed the threshold of the school, Vanya and Kolya had a total of 200 meters left to walk. Find Sasha's speed.