Think you’ve got what it takes to ace a job interview? Let’s put your brain to the test with 8 hard brain teasers that interviewers love to throw at candidates! These aren’t your average questions—they’ll push you to think outside the box, solve problems creatively, and maybe even laugh at how tricky they are. Whether it’s figuring out how many golf balls fit in a bus or solving a riddle about pirates splitting treasure, these teasers are designed to challenge your logic and quick thinking. Even if you’re not job-hunting, they’re a fun way to see how sharp you really are under pressure. So grab a pen, warm up your brain, and see if you can crack them all—good luck, genius! #brightside
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For more videos and articles visit: http://www.brightside.me
Animation is created by Bright Side.
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Music from TheSoul Sound: https://thesoul-sound.com/
Listen to Bright Side on:
Spotify - https://open.spotify.com/show/0hUkPxD34jRLrMrJux4VxV
Apple Podcast - https://podcasts.apple.com/podcast/idhttps-podcasts-apple-com-podcast-bright-side/id1554898078
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Stock materials (photos, footages and other):
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https://www.shutterstock.com
https://www.eastnews.ru
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FunTranscript
00:00A brain teaser is a great tool to challenge one's ability to think creatively and rationally.
00:06That's why many companies like Apple, Microsoft, and Facebook are known for offering some tough
00:11interview riddles for their candidates.
00:13However, in recent years, business giants reportedly gave up this practice.
00:19Google even called riddles a waste of time because they don't predict anything about
00:23the candidate's future performance and serve only for the sake of feeding the interviewer's
00:27ego.
00:29But it's still curious to know whether you could crack those riddles, right?
00:33So let's find out!
00:36They say Microsoft and Amazon used this puzzle in their interviews.
00:41You're given eight identical-looking balls.
00:43One of them is heavier than the rest of the seven.
00:46You have simple mechanical scales and you can only make two measurements.
00:50Can you find the heavier ball?
00:58Let's name the balls 1 to 8.
01:00First, we should put the balls 1, 2, and 3 on the first side of the scales and balls
01:054, 5, and 6 on the second side.
01:08If these two groups have equal weight, it means that the heavier ball is either 7 or
01:128.
01:14In this case, all we need to do is weigh the remaining two balls and find out which is
01:18heavier.
01:20But let's talk about another scenario.
01:22Say one of the groups of three balls on the scales is heavier.
01:26The desired ball must be here.
01:28Now all you have to do is measure any two of these balls and reveal which one is heavier.
01:33If both balls have the same weight, then the desired ball is the one that remains unweighted.
01:38Today, Elon Musk reportedly doesn't interview each and every employee.
01:44But rumor has it that when he used to do that, he would ask this riddle.
01:49You're standing somewhere on the surface of Earth.
01:52You walk one mile south, then one mile west, and then one mile north.
01:56And you end up back at the same point where you started.
02:00Where are you?
02:07The most obvious reply is the North Pole.
02:10Congratulations, it's correct!
02:12But according to Musk's biographers, when he heard this answer, he would also ask, where
02:17else could you be?
02:19What do you say?
02:26Let's take a look at the circle of latitude near the South Pole that has a one-mile circumference.
02:32From any point on this circle, walking one mile west along this circle will bring you
02:36back to that same point.
02:38Therefore, any point a mile north of this circle of latitude is a possible solution
02:43to the riddle.
02:44There's another option.
02:46You might be anywhere that is five miles south of the equator.
02:50This way, your westerly and easterly routes rotate an equal amount around a latitude.
02:55Also, you might be a superhero who can teleport to any point anytime.
03:00But that's a whole different ballgame.
03:02In this case, SpaceX would probably hire you without even looking at your resume.
03:07Many job portals mention interview puzzles about crossing a river under various terms.
03:13Here's a tricky example of those riddles.
03:16Nine brothers live on an island.
03:18Their names are 1, 2, 3, 4, 5, 6, 7, 8, and 9.
03:25They need to cross a river.
03:27They have a single boat that can take them from one bank to the other.
03:31But it can handle a maximum of three brothers at a time.
03:34Also, the boat cannot sail on its own, so one brother must steer it.
03:39There's one more condition.
03:41The sum of the same numbers of the brothers crossing the river must be a total square
03:46number.
03:47What's the minimal number of trips required to send all the brothers across the river?
03:58On the first trip, send brothers 2, 5, and 9.
04:02The sum of these numbers is 16, which is 4 times 4.
04:05Then send 9 back.
04:07This will be the second trip.
04:09On the third trip, send 3, 4, and 9.
04:12Again, the sum of their numbers is 16, which meets the conditions perfectly.
04:17On the fourth trip, send 9 back.
04:19And on the fifth trip, send 1, 7, and 8.
04:23The sum of these numbers is 16 again.
04:26On the sixth trip, return 1 to the island.
04:29And finally, on the seventh trip, send 1, 6, and 9.
04:33The sum of these numbers totals 16, which is still a square number.
04:37So it takes at least 7 trips to send all the brothers across the river.
04:43Media reported that LinkedIn used the next riddle during its job interviews.
04:48You're in a room with 3 levers.
04:50There are 3 fountains in the next room.
04:53Each lever turns on one of the fountains.
04:55Your task is to figure out which lever controls which fountain.
04:59You can't see into one room from the other, and all the 3 fountains are off.
05:04You can inspect the other room only once.
05:07What would you do?
05:14Let's call the levers 1, 2, and 3.
05:17Leave the first lever off.
05:19Turn lever 2 on for 10 minutes.
05:21Now turn it off and quickly turn on lever 3.
05:25Go into the room.
05:26Find the fountain that is still wet but not working.
05:29That's the one controlled by lever 2.
05:31The one that's currently working is linked with lever 3.
05:35And the last one is linked with the first lever.
05:38This logical exercise from the 1960s is called the Wason Selection Task.
05:43Be careful, it's pretty tricky.
05:46Even math students fail to crack it.
05:50There are 4 cards.
05:51Each card has a letter on one side and a number on the other side.
05:55There's only one rule.
05:56Every card with the letter D on one side should have the number 3 on the opposite side.
06:02Can you guess which card or cards should be turned over to check if the rule has been
06:06followed?
06:14You need to check 2 cards, D and 7.
06:17Most people suggest choosing cards D and 3, but this answer is wrong.
06:21Let's go through each card to understand the logic.
06:25The rule says, if a card has D, it must have 3 on the other side.
06:30So we must check the first card to make sure there's a 3 on the opposite side.
06:35The second card shows the letter K.
06:38We know nothing about the other letters, so it doesn't matter what's on the other side,
06:42because neither case violates the rule, so we can skip it.
06:46We know that some cards with the 3 digits will have the letter D on the other side,
06:51but we don't know if that's true for all cards with 3s.
06:55So it makes no sense to check the third card.
06:58And finally, the fourth card.
07:00If we find the D letter on the other side, it would violate the rule, because there's
07:04a digit 7 on the opposite side.
07:07So we should check only these 2 cards.
07:12Here's another informal variation of the previous game.
07:15There are 4 cards representing different persons.
07:18One side shows their favorite beverage, and the other side, their age.
07:22The city has a rule that anyone drinking lemonade must be over 20 years old.
07:28Which cards do you need to turn over to make sure the rule is followed?
07:38You only need to check the lemonade card and the card with number 16.
07:42Obviously, you need to make sure the lemonade drinking is over 20, and you need to make
07:47sure that the 16-year-old person doesn't drink lemonade.
07:51The coffee person can be any age, and the 25-year-old can legally drink lemonade.
07:57Most people can solve this riddle pretty quickly, and that's curious because, in fact,
08:01this task is similar to the previous one.
08:05This famous puzzle was designed to challenge one's ability to reason and see patterns.
08:10Three ants are in the corners of an equilateral triangle.
08:14Each ant is moving in a random direction along the edges of the triangle.
08:18What's the probability that none of the ants collide with the triangle?
08:28There's a 50% possibility of the ants never colliding, and a 50% chance that at least
08:33two of them can meet.
08:35All the ants can move in either a clockwise or counterclockwise direction.
08:40This halves your first 50% chance of the never-meeting ants to a 25% chance.
08:47And here's an example of a tricky wording question.
08:50What two words, when combined, hold the most letters?
08:58Post and office.
09:04That's it for today.
09:05So, hey, if you pacified your curiosity, then give the video a like and share it with your
09:09friends.
09:10Or if you want more, just click on these videos and stay on the Bright Side!