Raymond Cattell was one of the most important psychologists of the twentieth century. His research focused mainly on the intelligence and personality of the human being. These studies resulted in what is known as intelligence theory. do you want to know what is it about? Let's go deeper.
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Sport vector created by freepik In one race, one spectator observed that two runners arrived before another; two runners, after another, and a runner in the middle of two other runners. What is the minimum number of brokers for this situation? Solution Three brokers are enough for conditions to be met.
Three missionaries got lost exploring a jungle. Separated from their peers, without food and without radio, they only knew that to reach their destination they should always go forward. The three missionaries stopped in front of a river that blocked their passage, wondering what they could do. Suddenly, three cannibals appeared carrying a boat, because they also wanted to cross the river.
A numerical pyramid is constructed like the one we see in the figure by placing numbers at the base and placing the sum of two consecutive ones in the top row, in the middle of the previous ones. What numbers must be placed in the blank boxes to complete the numerical pyramid of the figure? Solution As each box is filled by adding the lower two, the number that occupies the central box between 6 and 9 intervenes both in the content of the upper right row and in the content of the one on the left.
The culture in which we find ourselves unconsciously instills a commitment to the world around us. Our will is not as ours as we believe and would like. The environment limits our behavior and inhibits or accelerates our decisions. We are part of a wider whole that nourishes or destroys us.
We are on the outside of a moat that surrounds the central area with water. The width of the pit is 5 meters and we have two boards of 5 meters to pass. We cannot do it using a single plank since it would fall into the pit. How can we cross the pit using the two boards?
Juanito celebrates his birthday with his friends. There are eight in total, so when Juanito prepares the cake to make four cuts with the knife and get the eight pieces, his friend Pedrito, who is very fond of riddles, proposes the following: Are you able to cut the cake in eight equal-sized portions with only three cuts?
In the target game we have three darts in each turn. The score of each roll is added and we get the total that can be a maximum of 180 if the three dice fall into triple 20. In case you do not know the game and its scoring method, you must know that each portion of the target is headed by a number that indicates the score of a dart that falls in that area.
I am interested in what matters to all matters relating to love or relationships. Needless to say, when the word “infidelity” is named, the hairs of many people bristle, at some point that word or tendency has passed through our heads. If we talk about infidelity, a good start would be to define the term.
A prisoner languished lonely inside his cell. Bars, latches, bolts and armed guards closed the exit. The walls were made of reinforced concrete and one meter thick, supported on foundations more than six meters deep; the ground was rammed with firm ground. There was no window, only light entered through a skylight on the ceiling, large enough to pass a person, but two and a half meters high.
The following enigma was proposed by the fantastic Sam Loyd in his puzzle encyclopedia. Two ships depart from the opposite banks of a river at the same time and are located 720 yards from the port. Once they reach the opposite end of the river, they make a 10-minute stop and on the return trip they are 400 yards from the other port.
Here is the original story of the musician and the monkey house told by a witness of the facts. As you know, it was not the best days of the organ that unfortunately had gone out of fashion little by little, but the tenacity of the musician was inexhaustible since the tip of the neighbors encouraged him to continue playing in the neighborhoods.
The money from the East, coined in varying sizes and weights to allow travelers to be deceived, is too complex for our mathematicians, so that when describing trade between Orientals we will simplify things by speaking in dollars and cents. Camel hair, which is used in the manufacture of shawls and expensive carpets, is gathered by what is called ordinary people and sold through a commission agent, in large or small quantities, to merchants.
This curious riddle was devised from the recent statement of a French astronomer who claims to have identified a new star of the first magnitude. The illustration shows the teacher describing his new discovery to his fellow astronomers. He has drawn the position of fifteen stars of different sizes and is now about to show what his new discovery is in the sky.
Background Vector created by brgfx Here is a remarkable problem of ages that I am sure will entertain young people and will open, at the same time, a new line of reasoning to some smarties who have made statistical calculation their specialty. It seems that an ingenious or eccentric teacher - since both cases can be treated -, eager to gather a certain number of older students in a class he was training, offered to give a prize every day to the side of boys or girls whose ages would add more.
There are very interesting riddles that can arise at any time between the various changes and hazards of this life. George Washington Johnson, the honest keeper in a recent fashion show, wants to know the solution to the following problem. At the end of the show there were only six hats left, but the applicants were so stunned that none could find the corresponding shelter, let alone recognize what their hat was.
The city of the Four Robles is named after one of the first settlers who owned a large plot of land that left his four children in inheritance, specifying that they "divide it equally, as indicated by the positions of four ancient oaks that have always served as guides. ”
Here is a simple but beautiful image of puzzles, full of funny figures that show how unknown quantities of things can be discovered by induction, without peering under the tent or resorting to algebra. It seems that Harry went to the circus, but being a cautious person, he wanted to make sure to check the value of his money before parting with him, so he questioned the goalkeeper about the number of horses, riders and animals at the fair.
A humble peasant, goes on the back of his faithful mare to ask his beloved Mary in marriage. During the long trip his mount suffers a mishap that prevents him from continuing with the trip. Luckily, it is near the inn where you can get another horse. The innkeeper tells him that he will not have horses until after seven moons, so the poor farmer has no choice but to stay in the inn until the animal arrives.