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How long can a person go without sleep?
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How long can a person go without sleep?

We all know how important it is to sleep well for human health. When we sleep we make a well-deserved rest of our brain and rest of the rest of our body. It is something of vital importance and necessary for the proper functioning of both one and the other. Thus, sleep is essential for life and is the basis of numerous physiological and psychological functions, such as tissue repair, growth, memory consolidation and learning.

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Extreme speed stack

In recent years, a sport called Speed ​​Stack has become very fashionable in the United States. The game consists of stacking pyramid-shaped glasses making different series of 3, 6 or 10 glasses according to the game mode. You can watch this illustrative video. A young man from that country is willing to break the height record of stacked glasses and wants to make a pyramid of 100 tall glasses.
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The Haunted Mansion

Dear friend: Soon after buying this old mansion, I had the unpleasant surprise of seeing that it is bewitched with two sounds of the aftermath that make it practically uninhabitable. It is a picaresque song and a sardonic laugh. I still have some hope, however, since experience has shown me that his behavior obeys certain dark but infallible laws and that it can be modified by touching the organ and burning incense.
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The towers of Hanoi

Legend has it that in the great temple of Varanasi, below the dome that marks the center of the world, lies a bronze base on which three diamond needles of a high elbow and the thickness of a bee's body are fixed . In one of these needles, God, at the beginning of the centuries, placed sixty-four discs of pure gold, the largest on the bronze base, and the others, in decreasing order of width, superimposed to the top.
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The order of the numbers

We have 8 numbers: 2 ones, 2 doses, 2 three, 2 four. They must be placed in such a way that between the 2 ones there is only one number, between the 2 doses there are two numbers, between the 2 three, three numbers and between the 2 four, four numbers. How to place them? Solution You have to distribute them like this: 4 1 3 1 2 4 3 2 Or vice versa: 2 3 4 2 1 3 1 4
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Escape from prison

Two friends are convicted of a crime they did not commit in the safest prison in the world located on top of a large mountain. They are forced to work from sun to sun by a miserable piece of bread and a glass of water a day under the supervision of the evil prison director. One day they receive a mysterious message from a prisoner who managed to escape long ago.
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Four-legged elephant

What would you say are the true legs of this elephant? The hooves do not correspond to the legs so it is very easy to get confused and that was just what our artist intended when creating the image of this fantastic animal.
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What does the poem hide?

Five hundred starts, five hundred ends. It has a five in the center. The first of the letters and the first of the figures complete it. You will think and shuffle, and the name of a Jewish king will quickly discover. Solution DAVID D equals five hundred in Roman numerals V equals five I equals one The first letter of the alphabet is A
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The day of the week

Alice is lost in the woods and can't remember what day of the week she is. There he meets the white rabbit that lies on Mondays, Tuesdays and Wednesdays and with the invisible cat that lies on Thursdays, Fridays and Saturdays. The rest of the days of the week both always tell the truth. Alicia asks both of them What day is it today?
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Sumafruits

Replace each fruit with a one-digit number to ensure that the vertical and horizontal sums are as indicated. Of course, each fruit always has the same value and different fruits have different values. How much is each fruit worth? Solution We see that the three pears added give 15. That means that the pear is worth 5.
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Tennis tournament

A tennis tournament was organized a few years ago in my neighborhood club. 9 players signed up and the match diagram looked like this: As you can see, there were some difficulties with the organization due to the number of participants. The participant "I" went directly to the second round, the same happened with the winner between "A" and "B".
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Einstein's riddle

They say that when Einstein proposed this puzzle he said that 98% of the world's population would not be able to solve it. Will you get it? We have 5 houses of five different colors. In each of them lives a person of a different nationality and each of the owners drinks a different drink, smokes a different brand of cigarettes and has a different pet.
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Pawnshop

Joe Tymo took a five-dollar bill to a pawnshop and pawned it for three dollars. He then sold the ballot to Joe Prymo for three dollars. He took the ballot to the pawnshop and after playing the ticket he left so happy thinking that he had won two dollars. How much did you actually earn after recovering the ticket?
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The second hand car

After much effort, I managed to save € 5600 to buy a used car. Finally I found an offer car that cost € 5000 and had a 15,000Km warranty on parts and labor. The only problem is that I had no tires but at a nearby store I found a tire offer at € 100 the unit that had 10.
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Crossword of self-referential phrases

Self-referential phrases are those that define themselves. The simplest simply express the number of letters that form them and the most complex describe in more detail how many letters, vowels, consonants, syllables and words they contain. When these phrases use all the letters of the alphabet they are called self-referential pangrams.
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TEN + TWO = TWELVE

In the next sum, the digits have been replaced by letters so that each different letter represents a different number. What is the digit by which each letter has to be replaced so that the sum is correct? Solution The solution is as follows: 4 1 5 8 + 4 6 7 4 6 2 5
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Rabbits and Pigeons

In a cage where there are rabbits and pigeons, 35 heads and 94 legs can be counted. How many animals are there of each species? Solution We have 12 rabbits and 23 pigeons.
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Indian or Eskimo?

When you look at the drawing for the first time, you will probably see an image of an Indian's face looking to the left. Are you able to find the Eskimo that hides in the image? Solution The complete Eskimo is formed by the face of the Indian. The dark area on the right would represent a cave in which he intends to enter and the Eskimo would be facing away facing the right.
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A pet mess

In the houses of María, Juana and Paula there are a total of 16 animals, among which there are 3 dogs, twice as many cats, canaries and parrots. At Juana's house they can't see the dogs or the parrots, but they have 4 cats and two canaries. In Paula's house there is only one dog and two cats and finally in Maria's house they have 3 canaries with other animals.
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The chimpanzees of the TV

A zookeeper must select two chimpanzees among the three he has, to take them to a television studio to make an announcement. There are two that are male and are called Amiel and Brock, the one who is female is called Carisa. The guard knows that Amiel and Brock fight a lot, but Carisa doesn't understand well with Brock.
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The Mona Lisa

In this portrait of the Mona Lisa made by Octavio Ocampo we can find many hidden animals and characters. Can you find them all? Solution In the mountains hide up to eight profiles of different faces. We can also find a cat, three rabbits a dog, an angel a woman and in reality the Mona Lisa is nothing more than the reflection of a face on an oval mirror located above a chair.
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