Looking for brain teasers to stretch your brain?
So you think you’re smart? Here are 81 interesting brain teasers to get you stretching your mind and brain. These brain teaser questions comes with answers but it will be better, if you take time to think first before checking the answer next to each question.
Sometimes, brain teasers are one of the top interview questions employers ask job applicants to know how well they can think and analyze.
This list of 81 brain teasers has been arranged in a certain order: from the simple questions to the tough ones. So, check out this list, use your brain, and don’t forget to think outside the box!
81 Interesting Brain Teasers and Answers
- Johnny’s mother had three children. The first child was named April. The second child was named May. What was the third child’s name?
- A clerk at a butcher shop stands five feet ten inches tall and wears size 13 sneakers. What does he weigh?
- Before Mt. Everest was discovered, what was the highest mountain in the world?
Answer: Mt. Everest. It just wasn’t discovered yet.
- How much dirt is there in a hole that measures two feet by three feet by four feet?
Answer: There’s no dirt in a hole
- What word in the English language is always spelled incorrectly?
- Billie was born on December 28th, yet her birthday always falls in the summer. How is this possible?
Answer: Billie lives in the Southern Hemisphere
- In British Columbia you cannot take a picture of a man with a wooden leg. Why not?
Answer: There’s no man with a wooden leg”. However, the answer is – you cannot take a picture with a wooden leg, you need a camera or at least an iPhone
- If you were running a race and you passed the person in 2nd place, what place would you be in now?
Answer: You would be in 2nd place. You passed the person in second place, not first.
- Which is correct to say, “The yolk of the egg is white” or “The yolk of the egg are white?”
Answer: Egg yolks are yellow
- A farmer has five haystacks in one field and four haystacks in another. How many haystacks would he have if he combined them all in one field?
Answer: One. If he combines all his haystacks, they all become one big stack.
- Tom’s height is six feet, he’s an assistant at a butcher’s shop, and wears size 9 shoes. What does he weigh?
- Feed me and I live, yet give me a drink and I die Who am I?
- What kind of room has no doors or windows?
- What gets broken without being held?
Answer: A promise
- What word describes a woman who does not have all her fingers on one hand?
Answer: Normally people have half of their fingers on one hand. So he can be called a normal woman.
- What kind of tree can you carry in your hand?
- A girl who was just learning to drive went down a one-way street in the wrong direction, but didn’t break the law. How is that possible?
Answer: She was walking
- If you have me, you want to share me. If you share me, you haven’t got me. What am I?
- He has married many women, but has never been married. Who is he?
- Take off my skin – I won’t cry, but you will! What am I?
Round 2: More Brain Teaser Questions
Those are simple right? Let’s see if you’ll make it through the next 3 rounds!
- Imagine you are in a dark room. How do you get out?
Answer: Just stop imagining
- What invention lets you look right through a wall?
- What can you catch but not throw?
Answer: You said, it’s cold
- What is at the end of a rainbow?
Answer: No, not clouds or the grounds. It is letter w.
- What is always coming but never arrives?
Answer: Tomorrow. So better do it today.
- What occurs once in every minute, twice in every moment, yet never in a thousand years?
Answer: The letter M. The riddle’s answer actually refers to the frequency with which the letter “M” appears in each of these three words. lol
- A man ate an egg each day. He did not have any chickens at home. He never bought, borrowed or stole chicken eggs. How is this possible?
Answer: They were Goose, quail or ostrich eggs!
- I have I have streets but no pavement, I have cities but no buildings, I have forests but no trees, I have rivers yet no water, what am I?
- Three playing cards are placed; face down, on a table.
Hints: A jack is to the left of a queen. To the left of a spade is a diamond. A king is left of a heart. A spade is right of a king. Can you identify the cards?
Answer: King of diamonds, Jack or hearts, Queen of spades.
Another correct answer is: King of Diamonds, Jack of Spades, Queen of Hearts
- Serge, Chris et Marc are married to Lise, Monique and Lily.
- Serge loves golf but hates boating.
- Chris is Lise’s neighbour and loves boating.
- Marc’s daughter babysits one of Lily’s children.
- Lily’s husband is the only one who can walk to the train station.
- Lise has two daughters.
- Monique can’t make knots.
Question: Who are the married couples?
Answer: Serge + Lily, Chris + Monique, Marc + Lise
- If five persons can sew five dresses in five days. How many persons can sew fifty dresses in fifty days?
Answer: 5 persons
- Anne and Michel each have goats.
Michel says to Anne: “If you give me one of your goats, I will have double of what you will have remaining”.
Anne replies: “If you give me one of your goats, we will have exactly the same number of goats”.
Question: How many goats do Anne and Michel have?
Answer: 5 and 7 goats
- Roland, Marc et Pierrette are three children in the same family.
Pierrette is three times Marc’s age. In two years, she will be twice the age Roland will have at that time. Roland is a year older than Marc.
Question: How old are the children?
Answer: Marc = 4, Roland = 5, Pierrette = 12
- A man ate an egg each day.
He did not have any chickens at home. He never bought, borrowed or stole chicken eggs. How is this possible?
Answer: Not only chicken lay egg. It could be ostrich, quail etc. eggs.
- Michel, Louis and Lisette are members of a club.
The treasurer, who has little work, is an only child. Michel, who dates Lisette’s sister, does more than the president of the club. What are their jobs?
Answer: Michel = secretary, Lisette = president, Louis = treasurer
- Two fathers and two sons each shoot a duck. No one has shot the same duck. Only three ducks have been shot. How is this possible?
Answer: Grand-father + his son + his grandson
37: A youngster, standing one metre tall, lived with his parents on the tenth floor of an apartment building. When leaving for school in the morning, he would use the elevator to get to the ground floor. When returning from school, he would take the elevator to the fifth floor. Then, he would get out of the elevator and climb the stairs to the tenth floor.
Question: Why did he not use the elevator to get to the tenth floor?
Answer: He was too short to reach button.
- There are four scholastic awards: English, French, history and math.
Marks are between 0 and 100. No one is awarded two prizes.
The winners are Serge, Jack, Marc and Lisette.
- The highest result in all tests was obtained by Lisette.
- Jack and Marc had the same percentage in French.
- Jack obtained a higher score in math than Serge received in French.
- The winning results in French and math were the same.
- Marc scored one point less in English than Lisette in history.
- Lisette failed English.
Question: Who won which prize?
Answer: Serge = French, Marc = English, Jack = Math, Lisette = History
- In a school, three rings of a bell indicate recess time. Most of the students try to get from their classroom to the school yard before the third ring of the bell.
There is a ten second interval between each ring. If 2 seconds are used to store their books,
Question: How much time is available to reach the school yard before the third bell?
Answer: 18 seconds
- Two fathers and two sons go hunting.Each shot one rabbit. How many rabbits were shot?
Answer: 3 Rabbits (grandfather + his son + his grandson)
Round 3: More Brain Teasers
Feeling like you have more common sense than others? The following questions are going to make your mind go crazy.
- John has sons.
His eldest son is four years older than his second son. The second son is four years older than the youngest son. The youngest son is exactly half the age of the eldest. What are the sons’ ages?
Answer: 16, 12, 8 years old
42: There are twelve socks in a drawer: Six red socks and six blue socks. The room is completely dark, you cannot see.
Question: How many socks must you take from the drawer before ABSOLUTELY having either a pair of red socks or a pair of blue socks in hand?
Answer: 3 socks
43: A group of ten people are being photographed. The photographer places them into ten different positions. He continues to shuffle them until he has taken pictures of the ten persons in all possible groupings. How many pictures will he take?
Answer: 3 628 800
- Anne has blond hair, Josée has red hair and Claire has brown hair.
They are dating Denis, Aurel and Jack.
- Claire hates Denis.
- Josée dates Denis’ brother.
- Jack dates Josée’s sister.
Question: Who are dating?
Answer: Anne + Denis, Josée + Aurel, Claire + Jack
- Mister Black, Brown and Green are eating at a restaurant. Each is wearing a colored tie. The ties are black, brown and green in color.
Suddenly the man wearing the green tie says: “Did you notice that our ties are the same color as our names but no one is wearing a tie similar to his name? “Strange, indeed“, says Mr Black.
Question: What color tie was each man wearing?
Answer: Black = brown, Brown = green, Green = black
Have you checked out the prisoner hat riddle too?
- A man transports a fox, a duck and corn in a boat. The boat is only capable of transporting himself and one of the other three with each crossing.
Question: How did he succeed in crossing them all without letting the fox eat the duck or the duck eat the corn?
Answer: He transports the duck. He returns to get fox, transports fox but brings back duck. He leaves duck on shore and crosses with corn. He leaves corn with fox and returns to get duck.
- An army general wanted ten soldiers to cross a river. There was no bridge and the soldiers could not swim. The general saw a row boat in which there were two children. The boat could only hold two children or one soldier at a time.
Question: How did the soldiers cross the river in the boat?
Answer: Start with 2 children crossing. One child gets out of boat, other returns. Child gets out, soldier crosses. Soldier gets out, child returns. Both children cross…etc…
- A knight wanted to visit a princess. He had to arrive at exactly 17h00.
If he travelled at 15 km per hour, he would arrive one hour too early.
If he travelled at 10 km per hour, he would arrive one hour too late.
1- At what time did he leave?
2- What distance did he travel?
3- At what speed did he travel?
Answer: 12h00, 12kmh, 60km
- A crime has been committed. A life has been taken. The name, address and personal information are known by police. However, this person shall never go to trial or jail. The question is Why?
Answer: It’s suicide
- Two candles are the same length. Both are lit at the same time. The first candle (#1) burns six hours before it extinguishes itself. The second candle (#2) burns three hours before it extinguishes itself.
Question: During how much time must candle #1 burn before it is twice the length of candle #2?
Answer: 2 hours
- When can you add two to eleven and get one as the correct answer?
Answer: When you add two hours to eleven o’clock, you get one o’clock
- Arnold Schwarzenegger has a long one. Michael J.Fox has a short one. Madonna doesn’t use hers. Bill Clinton always uses his. The Pope never uses his. What is it?
- First I threw away the outside and cooked the inside, and then I ate the outside and threw away the inside. What did I eat?
Answer: Corn on the cob
- A man is trapped in a sealed room with only two doors. One of them leads to a fire-breathing dragon, while the other one leads to a room made up of magnifying glass.
Anyone who dares to enter it is charred off before they know it. How does he escape?
Answer: He will wait for night fall and then step out from the glass room
- A man is pushing his car along the road when he comes to a hotel. He shouts “I’m bankrupt!” Why?
Answer: He was playing Monopoly
- Imagine you’re in a dark room. How do you get out?
Answer: Stop imagining
- Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they’re not twins. How can this be?
Answer: The two babies are two of a set of triplets
- Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?
- What can travel around the world staying in one corner?
Answer: A stamp
- How many of each species did Moses take on the ark with him?
Answer: None. Moses wasn’t on the ark, Noah was
Round 4: More Brain Teaser Questions
- What gets wetter and wetter the more it dries?
62: What is unusual about the following words: revive, banana, grammar, voodoo, assess, potato, dresser, uneven?
Answer: Take the first letter of each word and place it at the end. It will spell the same word backwards.
- Feed me and I live, yet give me a drink and I die. What am I?
- What starts with letter “t”, is filled with “t” and ends in “t”?
- You can see a beautiful red house on your left and a mesmeric green house on your right, a warming and attractive pink house on your front. Then where is the white house?
Answer: White House in the United States
- A farmer had 20 cows. Due to contagious disease, suddenly, all but 11 cows died suddenly. How many cows does he now have?
Answer: 11 cows. (ALL but 11 cows died) 11 cows survived.
- If 5 men take around 3 hours to dig 3 holes, how long will it take for 2 me to dig half a hole?
Answer: There’s nothing called a half hole and it cannot be dug
- Two girls played and completed 5 games of chess. Each of them won the same number of games and there wasn’t any tie in any game. How did it happen?
Answer: The two girls weren’t playing against each other and they played with different competitor
- You walk across a bridge and you see a boat full of people, yet there isn’t a single person on board. How is that possible?
Answer: All the people on the boat are married
- You draw a line. Without touching it, how do you make the line longer?
Answer: You draw a line next to it, and it becomes the longer line.
- What can run but can’t walk?
Answer: A drop of water
- Name four days of the week that starts with letter “t”
Answer: Tuesday, Thursday, Today, and Tomorrow.
- If Imaobong’s daughter is my daughter’s mother, what am I to Imaobong?
Answer: I am Imaobong’s daughter
- My name is Tunger, I live on a farm. There are four other dogs on the farm with me. Their names are Snowy, Flash, Speedy and Brownie. What do you think the fifth dog’s name is?
- I am an odd number. Take away one letter and I become eve. What number am I?
Answer: Seven. (take away the ‘s’ and it becomes ‘even)
- What 5-letter word becomes shorter when you add two letters to it?
- What word looks the same backwards and upside down?
- How many seconds do you have in a year?
Answer: 12 seconds (January 2, February 2, March 2, etc.)
- How many months have 28 days?
Answer: All 12 months
- What 2 keys can’t open a door?
Answer: A monkey and a donkey
- A milkman has 2 empty jugs: a 3 gallon jug and a 5 gallon jug. How can he measure exactly 1 gallon without wasting any milk?
Answer: The Milkman filled the 3 gallon jug, and then emptied the contents into the 5 gallon jug. He then filled the 3 gallon jug again, and continued to fill the 4 gallon jug until it was full. the milk remaining in the 3 gallon was precisely 1 gallon
And that’s it! 81 interesting brain teasers to test your mental sharpness. Watch out for the 5 toughest Brain teasers!
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