Complex logical tasks. Logic problems

Good day, dear friends! Do you remember what grades you got in school? I remember. I don't have any C grades on my certificate. But during any year of study there were threes, twos and even stakes sometimes. So I’m thinking, who is Alexandra, my daughter, like? Excellent student, hanging on the honor board! Apparently the additional exercises we do with her are bearing fruit.

Lesson plan:

Exercise 1. Connecting the unconnected

A very interesting exercise! Useful not only for children, but also for adults. This exercise is used as a test during castings for radio presenters. Imagine, you come to a casting, and they say to you: “Come on, my friend, connect us a chicken with a pole.” In all seriousness, that's what they say!

This is precisely the point: you need to combine two completely unrelated concepts. Radio presenters need this in order to quickly and beautifully compose summaries to songs during live broadcasts, for easy transitions from one topic to another.

Well, it’s suitable for children to develop creative, imaginative, quick thinking.

So how do you connect a chicken with a pole? There are many options:

The chicken walks around the pole.
The chicken was blind, walked and crashed into a pole.
The chicken was strong, it hit the post, and it fell.
The pole fell right on the chicken.

Want to practice? Fine. Connect:

chamomile with milk;
headphones with jellyfish;
boots with the moon.

Exercise 2. Word breakers

If in the previous exercise we connected, then in this exercise we will break one long word into many short ones, consisting of letters of a large word. According to the rules, if a letter occurs 1 time in a long word, then repeat it in in short words You can't do it twice.

For example, the word "switch" is broken down into:

tulle;
key;
beak.

I don't see any more options, what about you?

You can break up any long words, for example, “holiday”, “picture”, “towel”, “polar explorer”.

Exercise 3. Puzzles

Solving puzzles helps you think outside the box and creatively. Teaches the child to analyze.

Puzzles may contain images, letters, numbers, commas, fractions, placed in very different orders. Let's try to solve some simple puzzles together.

On the first one we see the syllable “BA” and “barrel”. Let's connect: BA + Barrel = Butterfly.
On the second, the principle is the same: Ram + KA = Steering wheel.
The third one is more difficult. A cancer is drawn, and next to it is “a = y”. This means that in the word cancer, the letter “a” needs to be replaced with the letter “u”, we get “hand”. To this we add one more “a”: hand + a = hand.
The fourth rebus with a comma. Since the first letter is “A”, the guess word begins with it. Next we see “fist”, after the picture there is a comma, which means you need to subtract the last letter from the word “fist”. Let's get "kula". Now let's put it all together: A + kula = shark.
The fifth rebus is difficult only at first glance. You need to remove the letter “i” from the word “saw”, and read the word “cat” backwards. As a result, we get: pla + tok = scarf.
The sixth, completely letter puzzle. Everything is clear with the first and last letters, but what about the middle? We see the letter “o” drawn in the letter “t”, so let’s say “in t o”. We connect: A + WTO + P = AUTHOR.

Have you practiced? Now try to solve the puzzle yourself.

You can share your answers in the comments. You will find all sorts of puzzles in children's magazines and.

Exercise 4. Anagrams

Can an orange be turned into a spaniel and vice versa? "Easily!" - anagram lovers will answer. Even Magic wand will not need.

An anagram is a literary device that consists of rearranging the letters or sounds of a certain word (or phrase), resulting in another word or phrase.

Just as easily, a dream turns into a nose, a cat into a current, and a linden tree into a saw.

Well, shall we try? Let's do this:

the “coach” flew off to the stars;
the “word” grew on the head;
“lace” learned to fly;
"atlas" became edible;
the “pump” settled in the forest;
the “mote” became transparent;
the “roller” was placed on the table before dinner;
“Bun” learned to swim;
the “daisy” was spinning around the lantern on summer evenings;
The “park” could not survive without water.

Exercise 5. Logic problems

The more logic puzzles you solve, the stronger your thinking becomes. It’s not for nothing that they say that mathematics is gymnastics for the mind. Indeed, when solving some of them, you can really feel your brain moving.

Let's start with the simpler ones:

Kolya and Vasya were solving problems. One boy solved at the blackboard, and the other at his desk. Where did Vasya solve problems if Kolya didn’t solve them at the blackboard?
Three old grandmothers live in the same entrance, on the third, fifth and seventh floors. Who lives on what floor, if grandmother Nina lives above grandmother Valya, and grandmother Galya lives below grandmother Valya?
Yura, Igor, Pasha and Artem finished in the top four at the running competition. Who took what place? It is known that Yura came running neither first nor fourth, Igor ran after the winner, and Pasha was not last.

And Sashulya brought the next three problems from the Mathematical Olympiad. These are problems for third grade.

“The gardener planted 8 seedlings. All but four of them grew into pear trees. All but two pear trees bear pears. Pears from all fruiting pear trees, except one, are tasteless. How many pear trees have tasty pears?”

“Vasya, Petya, Vanya wear ties of only one color: green, yellow and blue. Vasya said: “Petya doesn’t like yellow" Petya said: “Vanya wears a blue tie.” Vanya said: “You are both deceiving.” Who prefers what color, if Vanya never lies?”

Now attention! A task of increased difficulty! “To the backfill,” as they say. I couldn't solve it. I suffered for a long time, and then I looked at the answers. She is also from the Olympics.

“The traveler needs to cross the desert. The transition lasts six days. The traveler and the porter who will accompany him can take with them a supply of water and food for one person for four days each. How many porters will the traveler need to realize his plan? Enter the smallest number."

If you still fall asleep on any problem, then contact me, I’ll help)

Exercise 6. Match puzzles

Matches are not a toy for children! A means for training thinking. For safety reasons, I suggest replacing matches with counting sticks.

These simple little sticks make very complex puzzles.

First, let's warm up:

fold two identical triangles from five sticks;
out of seven sticks, two identical squares;
remove three sticks to make three identical squares (see picture below).

Now it's more complicated:

Arrange three sticks so that the arrow flies in the opposite direction.

The fish also needs to be turned in the other direction, moving only three sticks.

After moving only three sticks, remove the strawberry from the glass.

Remove two sticks to create two equilateral triangles.

The answers can be found at the end of the article.

Exercise 7. Truth and lies

Now let's work as Sherlock Holmes! We will seek the truth and discover lies.

Show your child two pictures, on one of which depict a square and a triangle, and on the other a circle and a polygon.

And now offer cards with the following statements:

some figures on the card are triangles;
there are no triangles on the card;
there are circles on the card;
some figures on the card are squares;
all the figures on the card are triangles;
there are no polygons on the card;
There is not a single rectangle on the card.

The task is to determine whether these statements are false or true for each picture with shapes.

This kind of exercise can be done not only with geometric shapes, and also with images of animals. For example, put a cat, a fox and a squirrel in the picture.

Statements can be as follows:

all these animals are predators;
there are pets in the picture;
all the animals in the picture can climb trees;
all animals have fur.

You can choose pictures and sayings for them yourself.

Exercise 8. Instructions

We are surrounded by a variety of objects. We use them. Sometimes we don’t pay any attention to the instructions that come with these items. And it also happens that for some very necessary items There are simply no instructions. Let's correct this misunderstanding! We'll write the instructions ourselves.

Let's take a comb for example. Yes, yes, an ordinary comb! This is what Alexandra and I did.

So, instructions for using the comb.

A comb is a device made of plastic for making hair smooth and silky.
A comb should be used for excessive shaggy and curly hair.
To start combing, go to the comb and carefully take it in your hand.
Stand in front of the mirror, smile, bring the comb to the roots of your hair.
Now slowly move the comb down towards the ends of your hair.
If there are obstacles in the form of knots on the way of the comb, then run the comb over them several times with gentle pressure, while you may cry out slightly.
Each strand of hair must be processed with a comb.
Combing can be considered complete when the comb does not encounter a single knot on its way.
After finishing combing, you need to rinse the comb with water and place it in a specially designated place.
If a tooth of a comb breaks off, you need to throw it in the trash.
If all the teeth of the comb have broken off, send it after the tooth.

Try writing instructions for a saucepan, or slippers, or a glasses case. It will be interesting!

Exercise 9. Making up a story

Stories can be composed different ways, for example, based on a picture or on a given topic. This will help, by the way. And I suggest you try to compose a story based on the words that must be present in this story.

As always, an example.

The words are given: Olga Nikolaevna, poodle, sparkles, turnip, salary, gray hair, castle, flood, maple, song.

This is what Sasha did.

Olga Nikolaevna was walking down the street. She was leading her poodle Artemon on a leash; the poodle was all shiny. Yesterday he broke the lock on the cabinet, got to the box of glitter and poured it all over himself. Artemon also chewed through the pipe in the bathroom and caused a real flood. When Olga Nikolaevna came home from work and saw all this, gray hair appeared in her hair. And now they were going for turnips, because turnips calm the nerves. But turnips were expensive, costing half their salary. Before entering the store, Olga Nikolaevna tied the poodle to a maple tree and, humming a song, went inside.

Now try it yourself! Here are three sets of words:

Doctor, traffic light, headphones, lamp, mouse, magazine, frame, exam, janitor, paper clip.
First-grader, summer, hare, button, gap, fire, Velcro, shore, plane, hand.
Konstantin, jump, samovar, mirror, speed, sadness, step, ball, list, theater.

Exercise 10. Let's put things in order

We've already worked as detectives. Now I propose to work as police officers. The fact is that the words in well-known proverbs and sayings have violated the order. We will fight against order breakers. Try to arrange the words as they should be.

Food, time comes, in, appetite.
You will pull out, without, labor, from, a fish, a pond, without.
Measure, one, ah, one, seven, cut, one.
And, ride, sled, you love, carry, love.
They are waiting, no, seven, for one.
A word to the cat, and it’s nice and kind.
A hundred, ah, rubles, have, no, have, friends, a hundred.
Falls, no, apple trees, far, apple, from.
Flowing, stone, not, water, lying, under.
In autumn, they count the chickens.

I want to clarify. We don't do this on purpose. That is, there is no such thing that I say: “Come on, Alexandra, sit down at the table, let’s develop our thinking!” No. All this in between, if we go somewhere, we go, before bed instead of books. It’s very interesting to study, so you don’t have to force anyone.

Well, now the promised answers to the match puzzles!

Answers to puzzles

About two triangles made of five matches.

About two squares out of seven.

We get three squares.

We unfold the arrow (watch the color of the sticks).

Turn the fish.

And about two equilateral triangles.

I recently discovered this video on the Internet. It has completely different exercises. We tried, but so far it’s difficult. Well, let's practice. Take a look, maybe it will be useful to you too?

Go for it! Get busy! Grow together with your children. Try these golden exercises. Show off your results in the comments!

Thank you for your attention!

And I look forward to visiting you again! You are always welcome here!

ARITHMETICAL AND LOGICAL RIDDLES

Grandma Dasha has a grandson Pasha, a cat Fluff, and a dog Druzhok. How many grandchildren does grandma have?

The thermometer shows plus 15 degrees. How many degrees will these two thermometers show?

Sasha spends 10 minutes on the way to school. How much time will he spend if he goes with a friend?

My father's child, not my brother. Who is this?

There are 8 benches in the park. Three were painted. How many benches are there in the park?

My name is Yura. My sister only has one brother. What is the name of my sister's brother?

The loaf was cut into three parts. How many cuts were made?

What is lighter than 1 kg of cotton wool or 1 kg of iron?

(Equal)

The truck was heading to the village. On the way he met 4 cars. How many cars were going to the village?

Two boys played checkers for 2 hours. How long did each boy play?

(Two hours)

The miller went to the mill and saw 3 cats in each corner. How many legs are there in a mill?

A famous magician says he can place a bottle in the center of a room and crawl into it. Like this?

(Anyone can crawl into the room)

One driver did not take with him driver license. There was a one way sign, but he went in the opposite direction. The policeman saw this, but did not stop him. Why?

(The driver walked)

Can it rain two days in a row?

(No, there is night between them)

What will happen to the crow when she turns 7 years old?

(The eighth will go)

You can jump into it while moving, but you cannot jump out of it while moving. What is this?

(Airplane)

Born twice, dies once. Who is this?

(Chick)

What can’t you pick up from the floor by your tail?

(Ball of thread)

Who walks while sitting?

(Chess player)

What always increases and never decreases?

(Age)

A pan was placed on the edge of the table, tightly closed with a lid, so that two-thirds of the pan hung from the table. After some time the pan fell. What was in it?

The more you take from it, the more it becomes... What is this?

The girl fell from the second floor and broke her leg. How many legs will a girl break if she falls from the fourth floor?

(Maximum one, since the second leg is already broken)

The boy walks home from school for 30 minutes. How many minutes will it take 3 boys to cover the same road?

(In 30 minutes)

Where was Moses when the candle went out?

(In the dark)

The 9-story building has an elevator. 2 people live on the first floor, 4 people on the second, 8 people on the third, 16 on the fourth, 32 on the fifth, etc. Which button in the elevator of this building is pressed more often than others?

(First floor button)

When black cat What's the best way to get into the house?

(When the door is open)

A soldier walked past the Eiffel Tower. He took out a gun and fired. Where did he end up?

(To the police)

When a house is built, what is the first nail driven into?

(In a hat)

What goes uphill, then downhill, but remains in place?

What does half an orange look like most?

(For the second half of the orange)

Two went - three milk mushrooms were found. Four are following, how many milk mushrooms will they find?

(No one)

There are 25 coconuts in a box. The monkey stole all the nuts except 17. How many nuts were left in the box?

(17 nuts left)

You have guests over, and in the refrigerator there is a bottle of lemonade, a bag of pineapple juice and a bottle of... mineral water. What will you open first?

(Fridge)

What comb should you use to comb your hair?

(Petushin)

Which month has 28 days?

(There is a 28th day in every month)

What is not eaten raw, but cooked and thrown away?

(Bay leaf)

Which month is the shortest?

(May - it only has three letters)

What will happen to the red ball if it falls into the Black Sea?

(He'll get wet)

Which hand is better to stir tea?

(It’s better to stir with a spoon)

What question cannot be answered with “yes”?

("Are you sleeping?")

What question cannot be answered with “no”?

("You are alive?")

What nose doesn't smell?

(Nose of a shoe or boot, spout of a teapot)

How many eggs can you eat on an empty stomach?

(One thing. Everything else will be eaten not on an empty stomach)

It’s given to you, and people take advantage of it. What is this?

Can an ostrich call itself a bird?

(No, because he can't speak)

The man was driving in the car. He didn’t turn on the headlights, there was no moon, and there were no lights along the road. An old woman began to cross the road in front of the car, but the driver braked in time and no accident occurred. How did he manage to see the old woman?

(It was day)

Which ear doesn't hear?

(Ear (ear) at the mug)

What can you see with your eyes closed?

How long can you go to the forest?

My father's son, not my brother. Who is this? Where does the water stand? What is visible only at night?

(Myself) (In the well) (Stars)

A flock of ducks was flying: two in front, two behind, one in the middle and three in a row. How many are there in total?

A son and his father and a grandfather and his grandson walked in a column. How many are there?

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 entire performances in this way, causing even more laughter.

Although interesting riddles tricky logic questions 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 good exercise and a test of 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 it is?
(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 winter 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 went wrong. 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 prepares 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 starts to sink, you find yourself in the water, and sharks swim up to you. What to 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, there is a horse in front of you, and a car behind you. Where are you at?
(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 down 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 should receive 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)

Will help you develop memory and intelligence different types puzzles for adults - logic tasks, complex, funny or tricky questions, a variety of intellectual math games.

Logic games and puzzles for adults

To solve a variety of logic puzzles you don't need high level education, start solving them - a useful activity for absolutely everyone.Various riddles with a trick for adults train out-of-the-box thinking which will help in Everyday life find faster rational decisions in difficult everyday situations.

Riddles for adults

This type of task will allow you to immediately check the correctness of the solution you have found. What's good about these short riddles? Based on the answers, you can make a thematic selection for a specific holiday or feast to entertain guests. Depending on the lineup of guests, tricky riddles, tasks that will make your friends laugh, or math problems are good options.

With a catch

In tasks with a trick, the question itself often looks illogical at first glance, for example: what language is spoken silently? When the answer is announced, the person’s first reaction manifests itself as disagreement with it. At first glance, the question and the chosen answer are connected in an unusual way and with double implications. But after thinking a little, you can’t help but agree that such a daring decision is correct and very logical (answer: in sign language).

funny

It's a pleasure to play solving funny riddles. While your guests are expressing possible answers to tricky questions, the whole company is guaranteed to be shaken by bursts of laughter.

Mathematical

In such riddles, you need to guess a given number, or calculate the result, relying less on arithmetic than on intelligence. The answer that seems obvious and seems to lie on the surface is often incorrect.

Mind games

Logic problems for adults are multi-step combinations for training thinking. To solve them correctly, you need to think through your actions several steps ahead. Such tasks are relatively difficult; they often come in the form of original pictures, where you need to rearrange or complete some elements.

Preschoolers solve this problem in 5-10 minutes. Some programmers take up to an hour to complete it. But many people, after writing several sheets of paper, give up.

Parking space number

It usually takes a six-year-old child no more than 20 seconds to solve this problem. But it often confuses unprepared adults. So what number is hidden under the car?

Riddle for a genius

A genius finds a solution in 10 seconds. Bill Gates - in 20 seconds. Harvard University graduate - in 40 seconds. If you found the answer in 2 minutes, then you belong to the 15% of most gifted people. 75% of people are unable to solve this problem.

Ruler of the Island

The autocratic ruler of one island wanted to prevent aliens from settling on the island. Wanting to maintain the appearance of justice, he issued an order according to which anyone wishing to settle on the island must, after thinking carefully, make any statement, and after a preliminary warning that his life depended on the content of this statement. The order read: “If the alien tells the truth, he will be shot. If he tells a lie, he will be hanged." Can an alien become an island resident?

Project approval

According to the agreement, the procedure for approving a new project in the development of which institutions A, B, and C participate is as follows: if A and B participate in the approval first, then institution B must also participate. If approval occurs first in institutions B and C, Institution A also joins. The question is: are such cases possible when approving a project when only institutions A and B would take part in it, while the participation of institution B would not be necessary (while maintaining the agreement on the procedure for approving projects)?

Two tribes

There are two tribes living on the island: well done. Those who always tell the truth, and liars who always lie. The traveler met the islander, asked him who he was, and when he heard that he was from a tribe of fellows, he hired him as a guide. They went and saw another islander in the distance, and the traveler sent his guide to ask him to what tribe he belonged. The guide returned and said that he claimed to be from a tribe of fellows. The question is: was the guide a good guy or a liar?

Aborigines and Aliens

Three people stand before the court, each of whom can be either an aborigine or an alien. The judge knows that natives always answer questions truthfully, but aliens always lie. However, the judge does not know which of them is a native and which is an alien. He asks the first one, but does not understand his answer. Therefore, he asks first the second, and then the third, what the first answered. The second one says that the first one said he was an Aborigine. The third says that the first called himself an alien. Who were the second and third defendants?

Beetle on tape

The beetle went on a journey. He crawls along a tape, the length of which is 90 centimeters. At the other end of the ribbon, two centimeters from the end, is a flower. How many centimeters will the beetle have to crawl to the flower: 88 or 92 (provided that it crawls all the time on one side and only at the end can it cross the end of the tape to the other side)?

Purchase

Marina spent a long time choosing which jug to buy. Finally I chose. The saleswoman put the purchase in a box. What did Marina buy? How many jugs did the saleswoman put on the shelves, which ones they were on before?

Tourist

The tourist was walking towards the lake. He reached a crossroads, from where one road led to the right and the other to the left; one went to the lake, the other did not. There were two guys sitting at a crossroads, one of them always told the truth, the other always lied. Both of them answered either “yes” or “no” to any question. The tourist knew all this, but he did not know which of them was telling the truth and which was lying; he also did not know which road led to the lake. The tourist asked only one question to one of the guys. What kind of question was it, since he knew from the answer which road led to the lake?

broken window

During the break there were nine students left in the class. One of them broke the window. The following answers were received to the teacher's question:

How many triangles? What team?

Read carefully and do not write anything down: Torpedo tops the standings, Spartak is in fifth place, and Dynamo is right in the middle between them. If Lokomotiv is ahead of Spartak, and Zenit takes place immediately behind Dynamo, then which of the listed teams is in second place? You are given 30 seconds to think.

Project approval procedure

The enterprise has three workshops - A, B, C, which have agreed on the procedure for approving projects, namely: 1. If workshop B does not participate in the approval of the project, then workshop A does not participate in this approval. 2. If workshop B takes part in approval of the project, then workshops A and C take part in it. The question is: under these conditions, is workshop C obliged to take part in the approval of the project when workshop A takes part in the approval?

An evening walk

Which of these nine mustaches went for an “evening walk”?

7 buttons

Which of the 7 buttons should you press? For the bell to ring? It is recommended to find the path mentally.

Make a table

In the Moscow semi-final of the European Basketball Championship, held in Soviet time, the places were distributed as follows: USSR - 14 points, Italy and Czechoslovakia - 12 each, Israel - 11, Finland - 10, East Germany and Romania - 9 each, and Hungary - 7 points. According to the regulations. Each team received 2 points for a win, 1 point for a loss, and 0 points for a no-show. No draws were allowed. Make a summary table of the results of the games if you know that the Finnish team won against the Italian team and lost to the Romanian team.

Explanation is inevitable

On Tuesday at about 10 o'clock in the morning a stranger burst into Inspector Warnicke's room. He was extremely excited. His hands were shaking, his tousled hair stuck out in all directions. A few minutes later, having lit a cigarette and calmed down, the visitor began his story: - This morning I returned from vacation. I had to shake on the train all night. I didn’t get enough sleep and, when I came home, I decided to lie down on the sofa. Because of fatigue, I did not immediately notice that the piano had disappeared from the room, and the coffee table and armchair had been moved out of place. On this piece of paper I drew a plan for the arrangement of furniture in the room before I left. “Here’s what, dear,” said Inspector Warnicke, quickly glancing at the drawing, “First of all, it’s absolutely clear to me that you didn’t have a piano at all.” Now let's find out why you needed this lie. Why did Inspector Warnicke doubt the veracity of the visitor's story?

LOGIC PROBLEMS

Logic problems , just like mathematics, is called “mental gymnastics.” But, unlike mathematics, logic problems is an entertaining gymnastics that allows you to test and train your thought processes in a fun way, sometimes from an unexpected perspective. Solving them requires intelligence, sometimes intuition, but not special knowledge. Solving logic problems consists in thoroughly analyzing the conditions of the problem, unraveling the tangle of contradictory connections between characters or objects. Logic problems for children- these are, as a rule, whole stories with popular characters, which you just need to get used to, feel the situation, visually imagine it and catch the connections.

Even the most difficult logic problems do not contain numbers, vectors, functions. But a mathematical way of thinking is necessary here: the main thing is to comprehend and understand the condition logical problem. The most obvious solution on the surface is not always the right one. But most often, solving a logic problem turns out to be much simpler than it seems at first glance, despite the confusing condition.

Interesting logic problems for children in a variety of subjects - mathematics, physics, biology - cause them increased interest in these academic disciplines and help in their meaningful study. Logic problems for weighing, transfusion, non-standard tasks logical thinking They will also help you solve everyday problems in a non-standard way in everyday life.

In the process of solving logic problems you will get acquainted with mathematical logic - a separate science, otherwise called “mathematics without formulas”. Logic as a science was created by Aristotle, who was not a mathematician, but a philosopher. And logic was originally part of philosophy, one of the methods of reasoning. In his work “Analytics,” Aristotle created 20 patterns of reasoning, which he called syllogisms. One of his most famous syllogisms is: “Socrates is a man; all people are mortal; So Socrates is mortal." Logic (from ancient Greek. Λογική - speech, reasoning, thought) is the science of correct thinking, or, in other words, “the art of reasoning.”

There are certain techniques solving logical problems:

way of reasoning, with the help of which the simplest logical problems are solved. This method is considered the most trivial. During the solution, reasoning is used that consistently takes into account all the conditions of the problem, which gradually lead to a conclusion and the correct answer.

table method, used in solving text logic problems. As the name suggests, solving logical problems involves constructing tables that allow you to visualize the conditions of the problem, control the reasoning process, and help you draw correct logical conclusions.

graph method consists of brute force possible options development of events and the final choice of the only correct decision.

flowchart method- a method widely used in programming and solving logical transfusion problems. It consists in the fact that first operations (commands) are allocated in the form of blocks, then the sequence of execution of these commands is established. This is a flowchart, which is essentially a program, the execution of which leads to the solution of the task.

billiards method follows from trajectory theory (one of the branches of probability theory). To solve the problem, you need to draw a billiard table and interpret the actions by the movements of the billiard ball along different trajectories. In this case, it is necessary to keep records of possible results in a separate table.

Each of these methods is applicable to solving logical problems from different areas. These seemingly complex and scientific techniques can be used in solving logic problems for grades 1, 2, 3, 4, 5, 6, 7, 8, 9.

We present you a wide variety logic problems for grades 1, 2, 3, 4, 5, 6, 7, 8, 9. We have selected for you the most interesting logic problems with answers, which will be of interest not only to children, but also to parents.

choose for the child logic problems in accordance with his age and development
take your time to reveal the answer, let the child find it himself logical solution tasks. Let him get there on his own the right decision and you will see what pleasure and feeling of delight he will have when his answer coincides with the given one.
in progress solving logic problems acceptable suggestive questions and indirect clues indicating the direction of thinking.

Using our selection logic problems with answers you will really learn to solve logical problems, expand your horizons and significantly develop logical thinking. Go for it!!!

Solving logical problems - the first step towards child development.

E. Davydova

Logic is the art of arriving to an unpredictable conclusion.

Samuel Johnson

Without logic it is almost impossible to enter our world brilliant discoveries of intuition.

Kirill Fandeev

A person who thinks logically stands out nicely against the backdrop of the real world.

American saying

Logic is the morality of thought and speech.

Jan Lukasiewicz