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4 Villages
Brainteaser: 4 Villages
There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second. Can you calculate the distance between the fourth and the first village?
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Mrs. Knifflig's daughters
Brainteaser: Mrs. Knifflig's daughters
One day it is ringing at Mrs. Knifflig’s door. There is an insurance agent standing outside. Mrs. Knifflig is not really interested, but is willing to give the salesman a chance: “If you are able to guess the ages of my three daughters right, I will listen to your offer. I will give you two hints. First: The product of my daughters’ years of life is 36. Second: If you add the ages of my girls, the sum equals my house number.“ The salesman listens to these hints and complains that he needs more information to answer the question right. Mrs. Knifflig agrees: “Ok, I will give you one last tip: The oldest of my daughters is at her grandmother at the moment.“ After a little while, the salesman gives the right answer. How old are the daughters?
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Next Digit
Brainteaser: Next Digit
Can you find out the next digit in the following series ? 0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?
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Clock observations
Brainteaser: Clock observations
Hannah was sitting in front of a clock. When she observed it for the first time, the hour hand was at a minute mark and the minute hand was six minutes ahead. After some time, she observed the clock again to find that the hour hand was exactly on a different minute mark and the minute hand was seven minutes ahead of its time. Can you calculate how much time has elapsed between two observations?
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Brainteasers are a helpful exercise to train your logical thinking.
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Matchstick Math
Brainteaser: Matchstick Math
Move one matchstick to get another correct equation. Challenge: Inequality does not count as a solution! What is the new equation?
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Coffee and Tea
Brainteaser: Coffee and Tea
Suppose we put down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea. Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?
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Grandma's Age
Brainteaser: Grandma's Age
Her grandson is about as many days as her son in weeks, and her grandson is as many months as she is in years. Her grandson, her son and the grandmother herself together are 120 years. Can you tell the grandmother’s age in years?
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Hairs in NYC
Brainteaser: Hairs in NYC
You are hanging around in NYC when a person approaches you. "Leaving the bald people aside, I can bet a hundred bucks that there are two people living in NYC who have same number of hairs on their heads," he says to you. You say that you will take the bet. After talking to the man for a couple of minutes, you realize that you have lost the bet. What did the person say to you that proved his statement?
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Moving Matchsticks
Brainteaser: Moving Matchsticks
In the given picture you can see that there are 20 matchsticks that have been used to create five squares. You are allowed to move just two matchsticks and must form seven squares. Challenge: You cant overlap the matches and you are not allowed to break them. Also, as you can see in the picture, all squares must be closed. Post a picture of your solution!
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Presents
Brainteaser: Presents
Alex opened 24 presents Jonah opened 8 presents Clara opened 1 present Can you find out how many presents were opened by Andrew?
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Who got the fish?
Brainteaser: Who got the fish?
There are five houses, each in a different color. In each house there lives a person with a different nationality. Each of them has a fable for a specific drink, smokes a specific cigarette brand and has a specific pet. None of them drinks the same drink, smokes the same cigarettes or holds the same pet as the neighbors. There are following hints: The owner of the yellow house smokes Dunhill. The man living in the middle house drinks milk. The British man lives in the red house. The man owning a horse lives next to the man smoking Dunhill. The Norwegian lives in the first house. The green house is left to the white house. The man smoking Camel drinks beer. The man smoking Marlboro lives next to the man owning a cat. The Danish has a fable for tea. The Norwegian lives next to the blue house. The Marlboro smoking man has a neighbor who drinks water. The German smokes West. The owner of the green house likes to drink coffee. The Swedish has a dog. The person smoking Gauloise has a bird. Who has got the fish?
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Numbers and Movies
Brainteaser: Numbers and Movies
What movie is this: 9.80665 m/s²
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Number Series
Brainteaser: Number Series
Can you solve this number series problem? 7, 8, 10, 12, 16, 18 ?
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September Code
Brainteaser: September Code
Below, you can see some coding: January = 1017 February = 628 March = 1335 April = 145 May = 1353 June = 1064 July = 1074 August = 186 Now deciphering the way it has been coded, can you find out how September will be coded?
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Cracking Password
Brainteaser: Cracking Password
A guy was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box. Later, a friend of him tries opening the laptop but finds out that it is password protected. Following is the hint that appeared: 1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches It seemed awkward to him. Can you help him in cracking the password?
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Soda Cans
Brainteaser: Soda Cans
Three friends decided to divide the soda cans they had among them. When all of them drank four cans each, the total number of remaining cans was equal to the cans each one of them had after they had divided the cans. Can you calculate the total number of cans before distribution?
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Coded language
Brainteaser: Coded language
In a coded language: a) "Cosey Miso Ro" means "We are Goblins"; b) "Tichu KoPi Miso Pa" means "they are Evil People"; c) "Juha Liho KoPi " means "Who is Evil"; d) "Ro Miso Pi KoPi" means "the Goblins are Evil". Can you find out which word means "The" in this coded language?
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The Japanese Ship
Brainteaser: The Japanese Ship
A Japanese ship was en route to a mission in foreign seas. The captain of the ship felt tired and thought of taking a shower. Before showering he removed his diamond ring and Rolex and kept them on the table. When he returned from showering, he found that the ring and watch were stolen. He called the five members of the crew whom he suspected and asked them what they were doing for the last 15 minutes. The Cook (with a butcher knife in his hand): I was in the fridge room getting meat for cooking. The Engineer (with a high beam torch in his hand): I was working on generator engine. The Seaman: I was on the mast correcting the flag which was upside down by mistake. The Radio Officer: I was trying to make a contact with the company to inform them about our position. The Navigation Officer: I am on night watch, so I was sleeping in my cabin. Upon listening to them, the captain caught the lying member. Who do you think stole the valuables?
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Missing Numbers
Brainteaser: Missing Numbers
You have to fill numbers in place of question marks. The numbers that you can use are 1, 3, 5, 7, 9, 11, 13 and 15. You can repeat the numbers if you like.
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Math and Movies
Brainteaser: Math and Movies
Here is a mathematical expression that also tells a movie's name. What movie is that?
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Escape
Brainteaser: Escape
A man escapes from jail with the help of his girlfriend. The investigators suspect four girls of being the man's girlfriend. Out of those four girls, one is really the girlfriend that is lying. Two of the girls are completely innocent and are speaking the truth. One of the girls is the man's sister who is helping the girlfriend to lie. These are the statements from all four of them: Ariana: "Myrna is his girlfriend." Jane: "Angelina is lying." Angelina: "Ariana is lying." Myrna: "Jane is not his sister." Who is the man’s sister among them?
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1 3 4 5 8 12 15
1 2 3 4 5 6 8 12 15

Questions

Frequently Asked Questions
We are happy to answer the most frequently asked questions.

Brain teasers in the form of math problems and logic puzzles can still appear in interviews, but they are quite rare. More common now are market sizing guesstimates, such as “How many tennis balls can fit into a smart car?” These questions may also be referred to as brain teasers. In general, brain teasers test your creativity and ability to think outside the box.

Brain teasers are uncommon in interviews, and there is no specific rule regarding when an interviewer may choose to use one. However, they are more typical in final rounds and can be asked either before or after the main case discussion.

Market sizing guesstimates are often referred to as brain teasers as well. They are more common in interviews and consist of questions that ask you to determine a specific quantity, such as “How many golf balls can you fit into a passenger Boeing 747?” These questions test your ability to define a problem, break it down into assumptions, and use math to solve it.

Always prioritize case studies and the personal fit portion in your interview preparation, as these are the crucial aspects of your interview! Once you feel more comfortable with those, you can integrate some brain teaser practice into your preparation. This may give you the advantage you need to stand out among other candidates! You can use our brain teaser library to challenge your creative thinking. Have fun!

Brain Teaser – Challenge Your Logical and Numerical Thinking

A brain teaser is a riddle or puzzle designed to challenge your logical thinking. In interviews, interviewers may use them to gain insights into your logical and creative thinking skills, which are valuable in various careers. The most important aspect here is not just the answer but how you approach the problem. Practice our brain teasers to prepare yourself for any interview situation!

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