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650 fun brain teasers

At leisure / funny puzzles

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Random funny trick question:

Who is the master of all trades?

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A grandmother was carrying a hundred eggs to the market, and the bottom fell. How many eggs are left in the basket?

Not on any planet. It exists only on Earth.

The night watchman died during the day. Will they give him a pension?

Which French city often reminds us of the curtains on the windows?

One eye, one horn, but not a rhinoceros?

One horse owner left a stable as a legacy to his sons. He bequeathed to the elder one half, the middle third, and the youngest a ninth of all the horses. There were 17 horses left in the stable at the time of the owner's death. How can you divide the horses without breaking the will?

One boy met a man at the market who offered a bet: “If I write your exact weight on a piece of paper, then you will pay me a thousand rubles, if I write incorrectly, then I will pay you a thousand rubles. At the same time, I will not weigh you and ask questions. " The boy agreed. The man wrote on paper and showed the boy. The boy looked at the paper and gave 1000 rubles to the man. How did the man win the bet?

The satellite makes one revolution around the Earth in 1 hour 40 minutes, and the other in 100 minutes. How can it be?

One train travels from Moscow to St. Petersburg with a delay of 10 minutes, and the other - from St. Petersburg to Moscow with a delay of 20 minutes. Which of these trains will be closer to Moscow when they meet?

One magician claimed that he could place a bottle in the center of the room and crawl into it. Like this?

One person ate one egg for breakfast every morning. Where did he get the egg from, if it is known that he did not have any chickens, he never bought chicken eggs, he never borrowed them from anyone, he never stole them and he never received them as a gift?

One yacht goes from Nice to San Remo, the other from San Remo to Nice. They left the harbors at the same time. The first hour of the yacht's movement went at the same speed (60 km/h), but then the first yacht increased its speed to 80 km/h. Which of the yachts will be closer to Nice at the time of their meeting?

One day, a collector of old money saw a coin in an antique shop, on which was the date: 175 BC. This Roman coin was slightly damaged, but was of great value. She was not expensive. But the collector did not buy it. Why?

One morning, a man notices that there is no air in one of the tires of his car. Nevertheless, he gets into the car and drives 150 km to his client. After the visit, he comes back. Although he did not inflate the tire, he could drive his car without problems. Why could he drive a car?

Dropped one, took a whole handful. What's this?

One egg is boiled for 3 minutes. How many minutes will 2 eggs cook?

The October Revolution took place on November 7/8, or October 24/25 according to the old style, i.e. 13 days ago. Why do we celebrate the New Year on January 31, and the Old New Year on January 1/12? Those. 13 days ahead. As?

He is black as the devil. Hot as hell! He is pure, like an angel, and gentle, like love. He is harmful to the people, he raises them to violence and confusion. No, it enlightens the mind and instills logical thinking. Revolution and progress go along with it. He helped raise great scientists and poets. People who make friends with him are distinguished by fortitude and recalcitrance to the fate of slaves.

It is black when bought, red when used, gray when discarded.

It is in every corner, but itself without corners.

She gives people torment if she is not shared.

It nourishes in autumn, warms in winter, amuses in spring, cools in summer.

From what animal did the Canary Islands get their name?

Why does a goose swim?

Why do goose paws turn red?

There are many holes, but the water still holds in it.

A man went to sea and got into a storm. He was taken to an island where there were no men, and only girls lived. In the morning he woke up covered in ropes at some kind of ritual and found out that they wanted to kill him. And he asked for the last word. After he said it, the girls made him a boat, gave him food, water and sent him home. What did he say?

Why is the cat running?

Why does a rooster close its eyes when it sings?

Suppose that someone offers you to make a bet on the following conditions - your partner bets 1 (one) dollar and claims that if you give him 40 dollars, he will give you change 100 (one hundred) dollars. Is it profitable to bet?

The professor sets the alarm for nine o'clock in the morning and goes to bed at eight o'clock in the evening. How long will the professor sleep (at the wake of the alarm, he will definitely wake up)

There are three pedals, but there are no clutch pedals among them. Why?

In front of you is a jug of water and a crystal glass, which must be filled to the top with water from this jug. But the following condition must be met: exactly the same amount of water must remain in the jug as it was before the start of your actions.

On the road, 3 turtles crawl one after another. The first turtle said: "2 turtles are crawling behind me." The second turtle said: "I have 1 turtle crawling behind me and 1 turtle crawling in front of me." And the third turtle said: "2 turtles are crawling in front of me and 1 turtle is crawling behind me." How can this be?

What path did no one walk or ride?

It is the ninth in order, and its name is translated from Latin as "seventh". What are we talking about?

Why do they go to the forest?

Why don't cows fly?

Why do birds fly?

Why is the dog running?

Why often they go, but they rarely go?

Why do they often go and never go?

Why do you go to bed when you want to sleep?

Under which tree does the hare sit when it rains?

The day before yesterday Fedya was 17 years old. He will be 20 next year. How can this be?

Why do buses stop at stops?

Why do polar bears do not eat penguins?

Why do white sheep eat more grass than black sheep?

Why didn't Beethoven finish his "Unfinished Symphony"?

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Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

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Random news from the Archive

Connecting chips with an inkjet printer and silver ink 17.03.2017

Scientists at the University of Barcelona have developed a way to bind 3D-printed chips using inks containing silver nanoparticles. It is necessary to use such chips in complex devices like computers and mobile phones.

Traditional electronics based on silicon are being replaced by more flexible technology based on paper and polymer substrates. The industry needs a fast, reliable and simple manufacturing process that takes into account the need to reduce environmental impact. Developers settled on silver nanoparticles because they are readily available - silver in the form of nanoparticles is easily converted into a stable ink that can be easily agglomerated. While silver is not cheap, the volume is low enough to keep costs low.

The main problem was that the process did not require new equipment, while maintaining or increasing production efficiency. To get sufficiently high values ​​at the outputs of the microcircuits, the scientists placed drops of "silver ink" between the microcircuit and the conductive paths printed on the substrate. As a result, silver nanoparticle (AgNP) ink provided high conductivity.

The developers are confident that their method can be applied to existing and new devices with great effect.

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