Get it together, now you have to pass the world's shortest intelligence assessment! It is called Cognitive Reflection Test (CRT), that is, a test of cognitive reflection. It was invented by Yale University professor Shane Frederick to assess how a person is able to perceive complex, which at first glance seems simple.
So let's go!
Question 1
A baseball bat and ball cost $1.10 together. The bat costs $1 more than the ball. How much is the ball worth?
Question 2
5 machines produce 5 things in 5 minutes. How long does it take 100 machines to produce 100 gizmos?
Question 3
The pond is overgrown with water lilies. Every day their area doubles. The entire lake will be overgrown in 48 days. How many days will the flowers absorb half of its surface?
And now the correct answers
Answer 1
How much did you get - 10 cents? Like most hurried people who considered themselves too smart for such a simple question. Judge for yourself: if the ball really cost 10 cents, and the bat cost a dollar more, then it alone would cost ten dollars, and this is the total cost of the items. In fact, the price of the ball is 5 cents.
Answer 2
Did you succumb to the temptation and automatically answer “100”? In vain, the question was a trick. In fact, it takes a hundred machines to produce a hundred things the same amount of time as it takes five units to create five things. That is 5 minutes. From a change in the number of machines, the time for making gizmos does not change!
Answer 3
Oh, how many of them - those who answered "24 days" - have sunk into oblivion! You too? Do not be sad, this question is the pinnacle of the test. Let's think logically: if every day the area of \u200b\u200bthickets doubles, then they will occupy half the surface of the pond a day before the expiration of the 48-day period required by the flowers in order to completely cover the reservoir. That is 47 days.
It became known about the creation of a completely new and very short test to determine mental capacity person in just 3 questions. The new IQ test turned out to be the shortest of all, but only 17% of users can correctly answer all questions on statistics.
The new IQ test was first created back in 2005 by scientist Shane Frederick of the renowned Massachusetts Institute of Technology. According to the site, despite the fact that the test was invented several years ago, it was published on the web in the public domain only now. The new mathematical IQ test included only three questions, and Shane Frederick tested his own test on more than 3,000 people of different ages, professions and education. As a result, the author of the new IQ test determined that only 17% of participants can correctly answer all 3 questions, that is, less than one in 5.
New IQ test questions:
- The racket and ball together cost 1 ruble 10 kopecks. The price of the racket is 1 ruble more than the price of the ball. How much is the ball worth?
- If 5 machines make 5 parts in 5 minutes, how long will it take 100 machines to make 100 parts?
- On the surface of the lake there is a spot of lilies that doubles every day. If it took 48 days to completely cover the lake, how many days did it take for the lake to be half covered with lilies?
The author of the test notes that the questions are actually very simple, if they are properly explained, but the person is arranged in such a way that he is in a hurry to give the wrong answer. Therefore, the value of the test for the subject is that he suppressed this desire in himself and carefully thought about the tasks set. According to statistics, people usually answer 10 kopecks for the first question, 100 minutes for the second question, and 24 days for the third, but these answers are completely wrong. Thus, more than 80% of the subjects of the new test give incorrect answers due to the fact that they cannot suppress some impulses in their minds, Frederick believes.
According to the site, there are many different IQ tests with a different number of questions and tasks, the passage of which can take several hours. In his work, Shane Frederick used only the mathematical side of assessing the mental abilities of the subjects, and tried to make the time to pass the test as minimal as possible.
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Psychologist Shane Frederick in 2005 created the most short test to assess intelligence. There are only 3 questions in it, which you need to answer as quickly as possible. You can test yourself too.
website invites you to take a cognitive ability test right now. Think, fix your answers and only then compare them with the correct ones.
Questions
1. Tennis racket and ball together cost 1 euro and 10 cents. A tennis racket is 1 euro more expensive than a ball. How much is the ball worth?
2. 5 machines produce 5 parts in 5 minutes. How many minutes will it take 100 machines to produce 100 parts?
3. Water lilies grow in the pond. They multiply quite quickly, doubling the area of distribution every day. In 48 days the pond will be completely covered with water lilies. In how many days will the water lilies cover half the pond?
1. 5 cents. If the ball cost 10 cents, the racket would sell for 1 euro 10 cents, but that's how much both items cost together.
2. 5 minutes. Let there be more machines - this does not affect the time it takes to manufacture one part.
3. 47 days, not 24. If the number of water lilies doubles every day, and it takes them 48 days to cover the entire pond, it is logical that they will occupy half the pond the day before that.
Were you able to answer the questions correctly the first time? Share with us your results.
The Cognitive Reflection Test (CRT) is called the world's shortest because it consists of only three questions. They make it clear that the human brain tends to complicate what is happening and at first glance may not notice quite obvious answers, the site says.
We offer you to pass this simple and very interesting test. The faster you do this, the higher your IQ level.
Three questions on the shortest IQ test
1. The bat and ball cost $1.10 in total. The bat costs $1 more than the ball. How much is the ball worth?
2. If it takes five machines five minutes to make five parts, how long will it take 100 machines to make 100 parts?
3. There is an island of lilies in the lake. Every day it doubles in size. It will take 48 days to cover the entire lake with flowers. How long does it take for plants to cover half of the lake?
Most Common Answers
1. 10 cents
2. 100 minutes
All of them are wrong.
Think carefully and get acquainted with the correct solutions to these problems.
Correct answers to test questions
Question #1
The ball will cost 5 cents.
If the ball costs X and the bat costs $1 more, then X + $1
Therefore, bat + ball = X+(X+1) = 1.1
So 2X+1 = 1.1 and 2X = 0.1
X = $0.05
Question #2
It takes 5 minutes to create 100 parts.
Five machines can make five parts in five minutes, so one machine can make one part in five minutes too. And if we have 100 machines, they can make 100 parts in five minutes.
Question #3
Lilies will cover half the lake in 47 days.
If the island doubles in size every day, then in one day from half of the blooming lake the reservoir will be completely covered with beautiful flowers.
These three questions were answered by 3,500 students from several American universities. 33% of the subjects were wrong in all three questions, and 83% answered at least one of them incorrectly. Only 17% of the respondents managed to complete the task completely.
Did you manage?
We also offer you to take a test from Joinfo and test your knowledge of dating stories of royal couples:
You may also be interested to know. Previously, we talked about 9 very unexpected reasons to suspect high intelligence.
Incredible Facts
Required just three questions to find einstein among less gifted people.
This test, designed by a psychologistShane Frederick(Shane Frederick) at Princeton University in 2005, testing your ability to ignore your instinctive reactions and think more slowly and rationally.
In other words, how good are you at overriding intuitive thinking in favor of analytical thinking.
Cognitive Ability Test (CRT) considered the shortest IQ test. To successfully pass it, you need to think carefully about your answers and question your intuitive answer.
To find out if you are genius , you need to answer all three questions correctly, but the speed with which you gave the answer also matters.The faster you answer, the higher your intelligence .
So how smart are you? Remember that the questions are not as simple as they seem. Even students from well-known universities, including Harvard, were unable to answer all three questions correctly.
Moreover, only 17 percent of them were able to receive highest mark on this test.
IQ test
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1 . A baseball bat and ball cost $1.10 together. The bat costs $1 more than the ball. How much is the ball worth?
2. 5 machines produce 5 parts in 5 minutes. How long will it take 100 machines to make 100 parts?
3. There is an area in the pond where water lilies grow. This area is doubling every day. If in 48 days the plot covers the entire pond, how long does it take to water lilies covered half the pond?