iq data. What does an IQ test mean? Is high IQ important?
People have different skills and levels of intelligence: verbal, typical, spatial, conceptual, mathematical
IQ–
The concept of "intelligence quotient" was introduced by the German psychologist William Stern.. He used IQ as an acronym for Intelligenz-Quotient – intelligence quotient. IQ was a score obtained from a series of standardized tests administered by a psychologist to determine the level of intelligence.
Mind Research Pioneers
At first, psychologists doubted that the human mind could be measured, much less accurately. While interest in measuring intelligence goes back thousands of years, the first IQ test has only recently appeared.
In 1904, the French government asked the psychologist Alfred Binet to help determine which students were most likely to have difficulty in school. The need to establish the intelligence of schoolchildren arose so that they could all receive compulsory primary education.
Binet asked his colleague Theodore Simon to help him design a test that would focus on practical issues like memory, attention and problem solving, things kids don't learn in school. Some answered more difficult questions than their age group, and so, based on observational data, the now classic concept of mental age has emerged. The result of the work of psychologists - the Binet-Simon scale - became the first standardized IQ test.
By 1916, Stanford University psychologist Lewis Terman had adapted the Binet-Simon scale for use in the United States. The modified test was called the Stanford-Binet Intelligence Scale and became the standard intelligence test in the United States for several decades. Stanford - Bean uses a number known as IQ - intelligence quotient to represent an individual's score.
The intelligence quotient was originally determined by dividing the mental age of the person taking the test by their chronological age and multiplying the quotient by 100. It goes without saying that this only works (or is best suited) for children. For example, a child with a mental age of 13.2 years and a chronological age of 10 years has an IQ of 132 and is eligible to enter Mensa (13.2 ÷ 10 x 100 = 132).
During World War I, the United States Army developed several tests to select recruits for specific jobs. The Army's "Alpha" test was a written test, while the "Beta" test was given to illiterate recruits.
This and other IQ tests have also been used to test new immigrants coming to the US from Ellis Island. Their results were used to fabricate false generalizations about the "surprisingly low intelligence" of Southern European immigrants and Jews. These results in 1920 led to proposals by the "racially motivated" psychologist Goddard and others to Congress to impose restrictions on immigration. Despite the fact that the tests were conducted only in English, and the vast majority of immigrants did not understand it, the United States government deported many thousands of deserving people who were labeled as "unfit" or "undesirable." And this happened a decade before Nazi Germany started talking about eugenics.
Psychologist David Wexler was dissatisfied, in his opinion, with the limited Stanford-Binet tests. The main reason for this was the single score, its emphasis on time limits, and the fact that the test was designed specifically for children and therefore not suitable for adults.
As a result, during the 1930s, Wexler developed a new test that was known as the Wexler Bellevue Intelligence Scale. The test was subsequently revised and became known as the Wechsler Adult Intelligence Scale, or WAIS. Instead of one overall assessment, the test created an overall picture of the subject's strengths and weaknesses. One advantage of this approach is that it also provides useful information. For example, high scores in some areas and low scores in others are indicative of a specific learning disability.
WAIS was psychologist Robert Wechsler's first test, while the WISC (Wechsler Intelligence Scale for Children) and the Wechsler Preschool Intelligence Scale (WPPSI) were developed later. The adult version has since been revised three times: WAIS-R (1981), WAIS III (1997) and in 2008 WAIS-IV.
Unlike tests based on chronological and mental age scales and standards, as in the case of Stanford-Binet, all versions of WAIS are calculated by comparing the test person's score with that of other test subjects of the same age group.
The average IQ score (worldwide) is 100 with 2/3 of the scores in the "normal" range of 85 to 115. WAIS norms have become the standard in IQ testing and are therefore used by the Eysenck and Stanford-Binet tests, with the exception that the standard deviation is not 15, but 16. The Cattell test has a deviation of 23.8 - it often gives very flattering IQs, which can mislead uninformed people.
High IQ - high intelligence?
IQ for the gifted is determined using special tests which provide psychologists with a wealth of useful information. Many of them the average score is fixed at the level of 145-150, and the full range is between 120 and 190. Scores below 120 are not designed for the test, and scores above 190 are very difficult to interpolate, although it is possible.
Paul Kooijmans from the Netherlands is considered the founder of upper range IQ tests, and he is the creator of most of the original, and now classic, tests of this type. He also founded and administers the super-high IQ societies Glia, Giga, and Grail. Among the most famous and popular Kooijmans tests are the Genius Test, the Nemesis Test, and the Kooijmans Multiple Choice Test. Paul's presence, influence and participation is a must, it's an integral part of the spirit of ultra-high IQ tests and his communities at large. Other classic IQ test gurus are Ron Hoeflin, Robert Lato, Laurent Dubois, Mislav Predavec, and Jonathon Wye.
There are different types of thinking that manifest themselves differently at different levels.. People have different skills and intelligence levels: verbal, typical, spatial, conceptual, mathematical. But there are also different ways to manifest them - logical, lateral, convergent, linear, divergent, and even inspired and ingenious.
Standard and Elevated IQ Tests Reveal General Intelligence Factor; but in high-level tests it is defined in different ways.
There is a lot of talk about high IQ scores being called genius IQs, but what do these numbers really mean and how do they add up? What IQ score is a sign of genius?
High IQ is any score above 140.
Genius IQ- more than 160.
great genius– the score is equal to or greater than 200 points.
High IQ is directly related to academic success, but does it have an impact on success in life in general? How much luckier are geniuses than people with lower IQs? Some experts believe that compared to other factors, including emotional intelligence, IQ is of lesser importance.
Breakdown of IQ scores
So how exactly are IQ scores interpreted? Average IQ test score is 100. 68% of IQ test results fall within the standard deviation of the mean. This means that most people have an IQ between 85 and 115.
Up to 24 points: profound dementia.
25–39 points: severe mental disability.
40–54 points: moderate dementia.
55–69 points: mild mental disability.
70–84 points: borderline mental disorder.
85–114 points: average intelligence.
115–129 points: Above average level.
130–144 points: moderate giftedness.
145–159 points: high endowment.
160–179 points c: exceptional talent.
over 179 points: deep endowment.
What does IQ mean?
When talking about intelligence tests, IQ is called "giftedness scores". What do they represent in assessing IQ? To understand this, it is important to first understand testing in general.
Today's IQ tests are mostly based on the original tests., developed in the early 1900s by a French psychologist Alfred Binet to identify students in need of additional assistance.
Based on his research, Binet developed the concept of mental age. Children in some age groups quickly answered questions that were usually answered by older children - their mental age exceeded chronological age. Binet's measurements of intelligence were based on the average abilities of children in a certain age group.
IQ tests are designed to measure a person's ability to solve problems and reason. The IQ score is a measure of fluid and crystallized intelligence. The scores indicate how well the test was done compared to other people in that age group.
Understanding IQ
The distribution of IQ scores follows the Bell curve– a bell-shaped curve, the peak of which corresponds to the largest number of test results. The bell is then lowered on each side, with scores below average on one side and above average on the other.
The mean value is equal to the average score and is calculated by adding all the results and then dividing them by the total number of points.
Standard deviation is a measure of variability in a population. A low standard deviation means that most of the data points are very close to the same value. A high standard deviation indicates that the data points tend to be farther from the mean. In IQ testing, the standard deviation is 15.
IQ increases
With each generation, IQ increases. This phenomenon is called the Flynn effect. named after explorer Jim Flynn. Since the 1930s, when standardized tests became widespread and researchers note a steady and significant increase in test scores in people around the world. Flynn suggested that this increase is due to an improvement in our ability to solve problems, think abstractly, and use logic.
According to Flynn, past generations mostly dealt with the concrete and specific problems of their immediate environment, while modern people think more about abstract and hypothetical situations. Not only that, but approaches to learning have changed dramatically over the past 75 years, and more people are, as a rule, engaged in mental work.
What do the tests measure?
IQ tests evaluate logic, spatial imagination, verbal reasoning, and visual ability. They are not intended to measure knowledge in specific subject areas, since an intelligence test is not something that can be learned in order to improve one's score. Instead, these tests assess the ability to use logic to solve problems, recognize patterns, and quickly make connections between different information.
While it is common to hear that prominent figures such as Albert Einstein and Stephen Hawking have IQs of 160 or higher, or that certain presidential candidates have specific IQs, these numbers are merely estimates. In most cases, there is no evidence that these well-known individuals have ever taken a standardized IQ test, let alone made the results public.
Why is the average score 100?
Psychometrists use a process known as standardization to compare and interpret IQ scores. This process is carried out by conducting a test on a representative sample and using its results to create standards or norms against which individual scores can be compared. Because average score is 100, experts can quickly compare individual scores to the average to see if they fall within a normal distribution.
Grading systems can vary from one publisher to another, although many tend to follow the same grading system. For example, on the Wechsler Adult Intelligence Scale and on the Stanford-Binet test, scores in the range of 85–115 are considered "average".
What exactly do the tests measure?
IQ tests are designed to assess crystallized and fluid mental abilities.
crystallized includes knowledge and skills acquired throughout life, and mobile The ability to reason, solve problems, and make sense of abstract information.
Mobile intelligence is considered to be independent of learning and tends to decline in later life. crystallized is directly related to learning and experience and is constantly increasing over time.
The intelligence test is administered by licensed psychologists. There are various types of tests, many of which include a range of subtests designed to assess math ability, language skills, memory, reasoning skills, and processing speed. Their scores are then combined to form a total IQ score.
It is important to note that while average, low, and genius IQs are often spoken of, there is no single test for intelligence. Many different tests are used today, including the Stanford-Binet, the Wechsler Adult Intelligence Scale, the Eysenck test, and the Woodcock-Johnson cognitive tests. Each of them differs in what exactly and how it is evaluated, and how the results are interpreted.
What is considered low IQ?
An IQ equal to or below 70 is considered low. In the past, this IQ was considered the standard for mental retardation, an intellectual disability characterized by significant cognitive impairment.
Today, however, IQ by itself is not used to diagnose intellectual disability. Instead, the criterion for this diagnosis is low IQ, with evidence that these cognitive limitations existed before the age of 18 and involved two or more adaptive areas such as communication and self-help.
About 2.2% of all people have an IQ score below 70.
So what does it mean to have an average IQ?
IQ level can be a good general indicator of reasoning and problem solving ability, but many psychologists suggest that the tests do not reveal the whole truth.
Among the few things they fail to measure are practical skills and talents. A person with an average IQ may be a great musician, artist, singer, or mechanic. Psychologist Howard Gardner developed the theory of multiple intelligences to address this shortcoming.
In addition, the researchers found that IQ can change over time. A study of the intelligence of adolescents with a gap of 4 years gave results, the values of which varied by 20 points.
IQ tests also do not measure curiosity and how well a person understands and owns emotions. Some experts, including writer Daniel Goleman, suggest that emotional intelligence (EQ) may be even more important than IQ. The researchers found that high IQ can really help people in many areas of life, but it does not guarantee success in life.
So there is no need to worry about the lack of genius, since the vast majority of people are not geniuses. Just as a high IQ does not guarantee success, an average or low IQ does not guarantee failure or mediocrity. Other factors such as hard work, resilience, perseverance and general attitude are important pieces of the puzzle. published
Recently, a variety of tests for determining the intelligence quotient or tests for IQ (IQ - intelligence quotient, read IQ) have become increasingly popular. They are held not only for entertainment. Some employers and educational institutions have included such tests in their admissions programs. What does it give and how to check your IQ (ikyu)?
WHAT IS INTELLIGENCE
The abbreviation IQ denotes a quantitative assessment of the intellectual abilities of the person being tested in relation to the level of mental development of an average person of this age.
This abbreviation was first used at the beginning of the last century in the Stanford-Bine scale.
What is intelligence? Translated from the Latin intellectus means understanding, perception, sensation. This is the quality of our psyche, which helps to adapt to new circumstances. Thanks to mental abilities, we can quickly adapt, learn new things and apply knowledge in practice. Mental abilities are divided into congenital and acquired.
Innate abilities play a big role in our lives. They are formed under the influence of genetics and begin to appear already in childhood. Primary intuition is not related to mental functions and does not depend on our skills. It is believed that it is formed on the basis of the architectonics of the cerebral cortex. Acquired abilities are what we will achieve throughout our lives.
Aikyu is affected by:
- individual genes;
- heredity;
- external factors.
If everything is clear with the first two points, then the last point raises many questions.
Scientists have found that mental abilities can be influenced by: environment, nutrition, race, and even country of residence. Jews have the highest rate, followed by Asians, and then only people of the white race. Therefore, some are considered smarter simply by nature, because they were born "where it is necessary."
Nutrition is also a very important component of the full and comprehensive development of the individual. It has been proven that the lack of iodine in the body of a teenager reduces intelligence by almost 10 points, but breastfeeding helps to increase the indicator by 7 positions. True, disputes on this subject have not subsided so far, since every scientist has his own opinion.
But don't despair, there are exceptions to every rule.
Checking aikyu is easy, the main thing is to know how.
HOW TO KNOW YOUR IQU
You can test your mental abilities on your own or under the supervision of a psychologist. For this, various tests have long been developed that allow you to reveal the hidden resources of your mind, and show everyone what you are capable of. In any of them there are tasks of different complexity.
Usually they are arranged in ascending order, from easy to more difficult. Points are awarded for each answer. The maximum number is 180. Tests are divided by age, each category has its own scale of results.
The most common questionnaire is the Eysenck test. In addition, the methods of R. Amthauer, D. Wexler, R. Cattell and J. Raven are often used. They are more accurate. It is not necessary to select one option. To test your mental abilities, you can pass all the proposed tests. The average result will most objectively show your aikyu.
Tests can be found on the Internet and taken online. True, before starting the test, it is better to carefully read the conditions. Some resources offer to pass the test for free, but you will have to pay money to get the result. There are options without payment, you just need to search the network.
Unfortunately, all these developments will not show 100% reliable results. A lot during the passage depends on the erudition and outlook of the person being tested. Feeling unwell or tired can have a negative impact on the quality of the test, so taking the test twice, you can get completely different results.
Good day, dear readers! Each of us is unique, knows a lot and knows a lot. Scientists have decided that the amount of what we can easily measure. So there was a term, not by hearsay known to us as IQ.
Someone boasts of the figure obtained as a result of testing and compares it with the scores of famous personalities. Someone is familiar with this abbreviation only from afar and has no idea at all what an IQ test is and what it consists of.
And really, who suddenly decided that we can be compared with each other in mind with the help of some points? How many of them do you need to be “ahead of the rest of the planet” and indeed, is it possible to measure the brain?
Lesson plan:
How and who began to measure intelligence?
They tried to measure human intelligence back in the 30s of the last century, and for this, scientists did not conduct any kind of experiments! The regularity between the nerves and the reaction of the body was searched for, the dependence of the mind on the size of the brain was calculated, the mental abilities of parents and children were compared, and the influence on the intellect of social origin and the number of years was determined.
Wilhelm Stern from Germany in 1912 first mentioned the concept of "intelligence quotient" (Intelligence Quotient) as a quantitative assessment of mental development. In his calculations, this was the quotient of dividing mental age by the chronological number of years. If everything is clear with chronological age, then I will explain what mental means.
Back in 1905, there was a series of tests for children called the Binet-Simon scale, which gave tasks for the age of 3-13 years, believing that intellectual development occurs during biological maturation, independent of learning. According to the success of the tests performed, the scale determined the same mental age.
Later, the set of tests was improved, the age limits were extended to 18 years and, for comparison, they began to use the statistical norm. But most importantly, the German scientist Stern assured everyone that the minds of children at different ages cannot be the same, and therefore began to look for that very quotient, multiplying the number obtained from dividing two ages by a hundred.
The result of this mathematical calculation is nothing but modern IQ. And tasks in tests for children began to be grouped by difficulty in accordance with the number of years.
Today, quantifying a person's mind compared to the average person of the same age has become especially popular. It is used by many well-known companies when they recruit employees to their staff. There are tests for children, helping educators to determine the abilities of students.
Although the IQ test is not an exam, it essentially reveals ingenuity and erudition, which is directly related to intelligence and thereby determines whether the applicant can cope with the tasks assigned to him.
How are IQ tests arranged?
Today there are no uniform standards for IQ tests. At first, these tasks for determining the level of intelligence included only lexical exercises, but today they can find tasks for non-arithmetic counts, meet logical series, they offer to complete geometric shapes, ask to identify fragments and remember any facts, and also to manipulate words.
They may consist of a different number of questions, the answers to which must be given in a certain time.
Each test contains tasks of increasing difficulty and requires working memory, creativity and out-of-the-box thinking. Moreover, they should be separated by age. This explains why a first-grader and a university graduate can have exactly the same IQ test results.
The average number of points for an ordinary inhabitant of the planet is 100 units. Half of the solved tasks correspond to this indicator. Accordingly, the maximum that can be scored is 200.
Interestingly, tests can not only evaluate your mind, but also show a predisposition to a way of thinking. And a low level, for example, in logic or verbal perception, does not mean at all that you are a complete layman. As scientists say, this is only your weak point and a large reserve, a gap in which you need to train.
There are several IQ tests. I will give examples of the most famous.
Wexler's assignments
They diagnose general intelligence in terms of verbal and non-verbal mental development. Each group has 10-30 questions. Among the verbal - general concepts, the search for similarities, digital series. In non-verbal - encryption, search for missing elements, sequence, folding figures.
Often these tests are used to determine neuropsychiatric pathologies.
Amthauer testing
It is intended primarily for professional psychodiagnostics, determining the volitional and emotional qualities, interests and needs of an audience of 12 and older, but is more often used for the age category of 35-40 years. It involves verbal, mathematical, spatial and mnemonic (associated with memorization and reproduction) tasks.
The method consists of 9 sections, each with 16-20 timed tasks. At the same time, samples of the algorithm of actions are even given, according to which it will be necessary to decide. The test results will be profiles, for example, type M - humanities, type U - techies, and so on.
Raven's Progressive Matrices Test
It is a whole battery of tasks for analyzing the level of intelligence through visual thinking and analogy for different ages and educations, nationalities and genders. In it, you need to organize sequences of geometric shapes, which become more complicated over and over again, revealing patterns.
This technique is considered one of the purest forms of measuring general intelligence.
The method of a psychologist from England, Hans Eysenck
This is the most popular IQ test. It is according to him that today ordinary people aged 18 to 50 with an education not lower than average determine the very cherished scores that craftsmen can boast of completing tasks.
In total, there are eight of its options, all of them are intended for a general assessment of the level of mental development. The first five are tasks for general skills, the next three assess verbal, mathematical and visual abilities. At the same time, both verbal and arithmetic tasks are equally given, therefore both techies and humanities are placed on an equal footing.
How to read IQ scores?
According to the results of testing according to Eysenck, you can classify yourself as one of the smart groups. I can’t say with exact certainty that this is true, since Eysenck’s tests are often criticized, but the statistics of scientists fix several levels.
- So, the standards, and this is 50% of the inhabitants of the planet, get their average 90-110 points. This is enough to pass exams and enter universities, working in the future in the middle management.
- There are those who have an IQ value above the average:
111-120 makes it possible to study in higher educational institutions without straining, and if you have the proper diligence, you can get a good job after studying, there are about 12% of them,
121-130 - a good opportunity to succeed in leadership and creativity, there are about 6% of them,
131-140 is already an extremely high rate, there are no more than 3% of such people, they are successful in specific areas, they can be scientists and do research,
those whose indicators go off scale over 140 develop not only themselves, they move science and knowledge forward. By the way, they are only 0.2%.
- There are those whose IQ values do not reach the required average level:
81-90 points allow you to get a secondary education and get a good job where more than intellectual, but physical labor is required, this is about 10% of the population,
71-80 make it possible to cope with elementary school and college, this is also 10% of all of us put together,
51-70 points are received by those who, with efforts, are able to receive a special education, but with this IQ indicators are already starting to talk about mental retardation, there are about 7% of such people,
below 50 get people who are unable to learn, suffering from some kind of mental illness.
I offer you for free take an online IQ test here and find out your perspectives. However, don't get hung up on these numbers! As the recent criticisms of many science professors have argued, these tests should not be blindly trusted. After all, this is just a predisposition to a certain type of tasks that you can train to solve, as well as half a lottery.
Good luck, and whoever is braver, post the results. It would be interesting!
Well, who is more prompt, join to our VKontakte group so as not to miss anything important, interesting and fun)
Yours, Evgenia Klimkovich)
50% of people have an IQ level of 90-110 - the average level of intelligence.
2.5% of people have an IQ level below 70 - they are mentally retarded.
2.5% of people have an IQ level above 130 - I consider such people with a high level of intelligence.
0.5% are considered geniuses, they have an IQ level above 140.
Although the debate about who is considered smart, and whether IQ determines mental ability, continues.
10. Stephen Hawking: IQ level = 160, 70 years old, UK.
This is probably one of the most famous people from this list. Stephen Hawking became famous for his progressive research in theoretical physics and other works that explain the laws of the universe. He is also the author of 7 bestsellers and the winner of 14 awards.
9.Sir Andrew Wiles: IQ level 170, 59 years old, UK.
In 1995, renowned British mathematician Sir Andrew Wiles proved Fermat's Last Theorem, which was considered the most difficult mathematical problem in the world. He is the recipient of 15 awards in mathematics and science. He has been a Knight Commander of the Order of the British Empire since 2000.
8.Paul Allen: IQ level 170, 59 years old, USA
The co-founder of Microsoft is by far one of the most successful people who has turned his mind into wealth. With a fortune estimated at 14.2 billion dollars, Paul Allen is in 48th place in the list of the richest people in the world, being the owner of many companies and sports teams.
7.YU dit Polgar: IQ level 170, 36 years old, Hungary.
Judit Polgar is a Hungarian chess player who at the age of 15 became the youngest grandmaster in the world, surpassing Bobby Fischer's record by a month. Her father taught her and her sisters chess at home, proving that children can reach incredible heights if started from a very early age. In the FIDE rating, among the first hundred chess players, Judit Polgar is the only woman.
6.James Woods: IQ level 180, 65 years old, USA.
American actor James Woods was a brilliant student. He enrolled in a linear algebra course at the prestigious UCLA and then enrolled at the Massachusetts Institute of Technology, where he decided to leave politics for acting. He has three Emmy Awards, a Golden Globe and two Oscar nominations.
5. Garry Kasparov: IQ level 190, 49 years old, Russia.
Garry Kasparov is the youngest undisputed world chess champion, who won this title at the age of 22. He holds the record for the longest holding the title of world number one chess player. In 2005, Kasparov announced his retirement from sports and devoted himself to politics and writing.
4. Rick Rosner: IQ level 192, 52 years old, USA
With such a high IQ, it would hardly occur to you that this person works as a television producer. However, Rick is no ordinary genius. His track record mentions the work of a stripper, a waiter on roller skates, and a sitter.
3.Kim Ung-young: IQ level 210, 49 years old, Korea.
Kim Ung-Yong is a wunderkind from Korea who entered the Guinness Book of Records as the owner of the highest IQ in the world. At the age of 2, he was fluent in two languages, and by the age of 4 he was already solving complex mathematical problems. By the age of 8, he was invited by NASA to study in the USA.
2. Christopher Michael Hirata: IQ level 225, 30 years old, USA
At the age of 14, American Christopher Hirata entered the California Institute of Technology, and at the age of 16 he was already working for NASA on projects related to the colonization of Mars. Also at the age of 22, he received his PhD in astrophysics. Currently, Hirata is an assistant professor of astrophysics at the California Institute of Technology.
1. T herens Tao: IQ level 230, 37 years old, China.
Tao was a gifted child. By the age of 2, when most of us were actively learning to walk and talk, he was already doing basic arithmetic. By age 9, he was taking university-level math courses and at 20 received his Ph.D. from Princeton University. At the age of 24, he becomes the youngest professor at UCLA. For all the time he published more than 250 scientific papers.
Found at artmaniako
. Thank you.
***
By the way, the figure of Garry Kasparov is very indicative.
EIf anyone remembers, in science he was an adherent of the "new chronology" - the teachings of Fomenko, which claims that almost the entire written history of mankind is invented. And its real depth is about 1000 years.
In the social sphere, Garry Kasparov is an ardent and completely unsuccessful Liberation politician and a fighter against the Putin regime.
That is high IQ does not help much when it comes to areas of life with a high sphere of uncertainty.
These include modern social science and current socio-political processes in Russia.
Test your intelligence with these interesting and unusual riddles.
Maybe you have a genius inside of you, or you are just a very smart person. You can find the correct answers to all riddles below.
You are ready? Go!
What do scores on IQ tests mean?
- 85 - 114 - average intelligence
- 115 - 129 - the level of intelligence is above average;
- 130 - 144 - moderately gifted person;
- 145 - 159 - a gifted person;
- 160 - 179 - an exceptionally gifted person;
- > 180 and above - a deeply gifted person.
Riddles and puzzles
Riddle 1.
How old is each child if the eldest daughter loves ice cream?
Riddle 2.
How to measure 15 minutes if you have two types of hourglass, one for 11 minutes and the other for 7 minutes?
Mystery 3.
What item is missing here?
Riddle 4.
The girl dropped the ring in her coffee and was able to get it out with her fingers without getting them wet or dirty. How is this possible?
Mystery 5.
How many triangles are there?
Riddle 6.
How much does each animal weigh?
Mystery 7.
Which cup will be filled first?
Mystery 8.
Three doctors reported that Robert was their brother, but Robert himself said that he had no brothers. Which one is the cheater?
ANSWERS:
Riddle 1.
Children 3, 3 and 8 years old.
Only two combinations of numbers can add up to 14 and multiply 72. Here they are: 3, 3, 8 and 6, 6, 2.
Since we know that there is only one older sister, the correct answer is 3, 3, 8.
Riddle 2.
1. Turn both pairs of watches over at the same time.
2. When the 7-minute clock runs out of sand, turn it over again.
3. When the 11-minute clock runs out of sand, you need to turn the 7-minute clock over (remember that at this time there are 4 minutes left in the large clock (11-7).
4. We are waiting for these 4 minutes to pass in the large clock and turn the small clock over. It will turn out 15 minutes (11 + 4).
Mystery 3.
The first figure is a circle with a white circle. All figures differ from each other in shape, color or size, only the first red circle does not differ in these parameters.
Riddle 4.
Nothing is said about liquid coffee, she just dropped the ring in dry coffee or on coffee beans.
Mystery 5.
There are 24 triangles in total. Here they are:
Riddle 6.
Mystery 7.
Cup number 5. Note that all tubes are blocked except for the one leading to the 5th cup.
