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11 Soviet tricky puzzles to test logic and wit
Recreation / / December 19, 2019
1. Sly sea inhabitants
There are three representatives of marine animals that have one common, peculiar only to them with weapons - they use it for protection from enemies. What are their names? What is this weapon that makes them dangerous even for humans?
2. fooled by the wise men
Some three wise men came into dispute: who is the wiser? The dispute has helped to solve a random passer-by, inviting them to test intelligence.
- Can you see me in, - he said, - five trims: three black and two white. Close your eyes!
With that, he put on each hood black and two white put into the bag.
- Can you open your eyes, - said a passerby. - Who can guess what color hat decorates his head, he has the right to consider themselves the wisest.
Long sat the wise men looking at each other... Finally, one said:
- At me black!
How did he guess?
3. weightless fly
Two glass cap balanced on precision balance. Under one of hoods sitting fly. If it takes off, the balance will remain in balance or not?
4. Underwater mill
Paddle wheel mounted on the bottom of the channel so that it can be easily rotated. In what direction it will rotate if flow is directed from right to left?
5. gracious law
In some states was the custom. Each offender was sentenced to death before his execution drew lots, which gave him hope for salvation. The box was lowered two pieces of paper, one with the word "Life", another with the words "Death." If convicted took out a piece of paper first, then I received a pardon. If he had the misfortune to take out a piece of paper with the inscription "Death", the sentence is to be executed.
A man who lived in this country, were enemies who slandered him and made sure that the court has sentenced to death an accident. Moreover, the enemies did not want to leave the innocent condemned the slightest opportunity to escape. The night before they pulled out of the penalty box with the paper "Life" sign and replaced it with a piece of paper with the inscription "Death." Now, no matter what the paper or stretched convicted, he could not escape death.
So thought his enemies. But he had friends who became known machinations of enemies. They broke into the jail and convicted warned that in a box, both lots have the inscription "Death." Friends persuaded the judges to open an accident criminal forgery of his enemies, and to insist on survey box with dice.
But, to their astonishment, the convict asked friends to keep trick enemies in the strictest confidence and assured him that if he would be saved. Friends took him for madman.
The next morning convicted without telling the judges about the plot of their enemies, and drew lots - has been released! How did he managed so happy to get out of their seemingly hopeless situation?
6. severe journey
In one historic fiction novel described the journey of three people to the North Pole. On snow-covered wilderness they went to the dogs, but almost at the Pole began ice fields, so smooth that the dog slipped and fell.
Then travelers, leaving the dogs decided to go further on skates. Each of them took with him a bag with the necessary things, and they have moved on, but after a time skating ceased to slide... What they had to do to be able to go skating further?
7. Waiting for the tram
Three brothers returning home from the theater, come to the tram stop to jump in the first carriage, which is suitable. The car did not show up, and older brother offered to wait.
- The stand here and wait, - said the middle brother, - better go ahead. When any of us catch up with the car, then jumped up, and in the meantime at least part of the way is already behind us - come home soon.
- If you have to go, - said the younger brother - do not forward motion and in the opposite direction: if we soon will fall head coach. So we arrive early and home.
Since the brothers could not convince each other, then each went their own way: the senior was expected at the site, the average went ahead, the youngest - back.
Which of the three brothers used to come home?
8. naughty liquid
As of this bottle to pour a glass of water, without removing the plug and not by tilting the bottle?
9. mysterious tide
On board the ship lowered steel gangway. Four its lower step are immersed in water. Each step 5 centimeters thick, the distance between two rungs - 30 centimeters. Tide, which rises at a rate of 40 centimeters per hour. How many steps will be under water in two hours?
10. The resourceful farmer
Once lived a cruel ruler who did not want to let anybody into their possession. The bridge across the border river was put sentry, armed from head to foot, and he was ordered to interrogate every traveler:
- Why did you go?
If the wayfarer in response lied, time had to grab it and then hang up. If the wayfarer answered the truth, and then he was no escape: Time was immediately drown him in the river.
That was a harsh law of the hardness of the ruler, and it is not surprising that no one dared to approach his possessions.
But now I found a farmer who, in spite of this, quietly came to the guarded bridge near the forbidden border.
- Why did you go? - sternly he stopped his watch, ready to execute daredevil, foolhardy going to certain death.
But the answer was that puzzled hour, strictly fulfilling the cruel law of his master, could not do anything with a sly peasant.
Said that the farmer?
11. miracles balance
Ordinary balance on one cup is a cobblestone weighing exactly 2 kilos, on the other - two-kilogram iron weight. These scales are gently lowered into the water. Are there any cups in balance?
Find out the answers.
Hide replies.
1. Sly sea inhabitants
Three inhabitants of the underwater kingdom - ramp, electric catfish and electric eel - have the ability to produce electricity in your body. The charge is sometimes so powerful that can kill a human or a large animal.
2. fooled by the wise men
Sage argued thus:
- I see before me two cap. Suppose that I am white. Then the second wise man seeing in front of black and white caps, should talk like this: "If me, too, was a white cap, a third person would have immediately guessed and said that he is black. But he was silent, then, to me is not white, and black. " And since the second does not say it, so, too black to me.
3. weightless fly
During takeoff flies balance weights broken, and here's why. To fly, the fly must push off from the air and thereby generate albeit slight, but nevertheless pressure. Here the pressure and disrupt the balance of the scales.
4. Underwater mill
The wheel will rotate counterclockwise, and here's why: the flow rate at the bottom is always less than the flow velocity at the surface of the water. Consequently, the pressure on the lower blade will be less and the upper blade more.
5. gracious law
Removing lots convicted did so he took out a piece of paper from the box and nobody showing swallowed it. Judges, wishing to establish that it was written on a piece of paper was destroyed, had to remove the rest of the box.
On it was written, "Death." Therefore, argued the judge, at the destruction of a piece of paper was written "Life" (they do not know anything about the plot). Cooking innocently condemned certain death, the enemies unwittingly led him to salvation.
6. severe journey
Why does slide skates? Because under the weight of the body in the apex of ice melts and forms a thin layer of water serves as a lubricant. If the horses stopped to slide, it is evident that the pressure on them is not enough for the formation of a lubricant. Therefore, travelers had to increase the severity of his backpack.
7. Waiting for the tram
The younger brother, going back over the course of the movement, saw the car coming toward him and jumped in. When the car came to a place where expecting the elder brother, the latter jumped into it. A little later the same car caught walking in front of the middle brother, and took it. All three brothers were in the same car, and, of course, came home at the same time.
8. naughty liquid
Need much to blow into a tube, then hold her finger and, substituting a glass, let it go. The increased pressure in the bottle will cause the water to rise up through the tube and cause leakage.
9. mysterious tide
Two hours later, the water will have the same four steps, because the staircase together with the steamer rises tide.
10. The resourceful farmer
On the question of time, "Why you go?" The farmer gave this answer: "I'm going to be hanging here on this gallows." Such a response time set to a standstill.
What should he do with the peasant? Hang? But then come the peasant told the truth, for the same truthful answer was ordered not to hang and drown.
But you can not drown: in this case it appears that the farmer lied, and for false testimony to be hung. So watch and could not do anything with a sharp-witted peasant.
11. miracles balance
Every body if immerse it in water, it becomes easier: it loses its weight as much as it weighs the displaced water. Knowing this law, we can easily answer the question of the problem.
Cobblestone weighing 2 kilograms occupies a larger volume than the two-kilogram iron weight because granite is easier to iron. So the cobblestone displace a larger volume of water than the weight, and, according to the law of Archimedes, will lose water more weight than the weight. So, scales underwater slope towards the weights.
How did you manage to solve the puzzle without hints? Share in the comments!
All of these original puzzle we have taken from the book "5 minutes to think». This re-release of a collection that was released back in 1950. In it contains interesting experiments in physics, mathematical puzzles, fun and tricks, chess studies and crossword puzzles. This book - a real godsend for those who want to learn to think outside the box and to stretch a little brains.
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