Brain Teasers
Riddle: Mrs. Nimbus left some money for her eldest son, Garrett, to go grocery shopping. When Garrett went to take the money, he didn't find it. Mrs. Nimbus suspected that one of her two younger kids-either Abby or Rick–had stolen it, so she questioned them. Abby said that she had put the money underneath a book so that it wouldn't fly away. Rick said that he had put the money inside the book between pages 51 and 52. Who's the thief?
Answer: Rick is the thief. Books normally have their odd-numbered pages on the right, while the even-numbered pages are on the left. Pages 51 and 52 are on two sides of the same sheet, so Rick couldn't have put the money between those two pages.
Riddle: Ty has four frogs-Lily, Hoppy, Croaky, and Icky–and he needs you to identify their colors. One of the frogs is black and blue, while the other three and black and orange. Assuming that both of the following statements are true, can you guess which frog is black and blue? 1) Lily and Hoppy are of the same color. 2) Croaky isn't black and blue.
Answer: Icky is black and blue. If Lily and Hoppy are of the same color, then both of them must be black and orange because only ONE of the frogs is black and blue. And if Croaky isn't black and blue, then he is black and orange. Therefore, Icky is the only black and blue frog among the four frogs.
Riddle: "I was walking to my local grocery store to pick up some stuff when I saw that my neighbor Rachel's house had been burgled! It was very cold outside, and I saw some frost on the window. I breathed on the glass to get rid of the frost, and I saw that Rachel's safe had been open and that her money was stolen!". That was Hank's story. An officer who was investigating asked Hank, "And where did you hide the money you stole from your neighbor?". How did the officer come to this conclusion?
Answer: Windows become frozen over from the inside, not the outside, so Hank couldn't have wiped off the frost from the window to find the money stolen.
Riddle: Charles woke up one morning to find himself trapped inside a prison made of what appeared to be unbreakable glass. Having no memory of how he got there, he looked around and was horrified to see two of his closest friends lying on their sides - dead. The last thing Charles remembered before falling asleep, was seeing both of his pals alive and in good health; but now they were both dead, and he wondered if he soon would be sharing their fate. As the days passed, his captors allowed him to have plenty of water, but allowed him only a few crumbs of food each day. Over time, Charles often heard his jailers talking amongst themselves, stating if he were ever able to escape his cell, he would certainly be dead within a matter of minutes. Who exactly is Charles, and why have his captors never been brought to justice?
Answer: Charles and his two friends were pet goldfish placed in an unbreakable glass fish bowl by their owners. Unfortunately, his two friends died.
Riddle: In a pond, there are some flowers with some bees hovering over them. If both the following statements are true: 1. If each bee lands on a flower, one bee doesn't get a flower. 2. If two bees share each flower, there is one flower left out. How many flowers and bees are there?
Answer: 4 bees and 3 flowers.
Riddle: Marvin is a typical boy who attends a typical elementary school. However, Marvin is considered by some to be a bit eccentric. His teachers have noted he has a habit of carrying some unusual things in his pockets. Some of these items include: onion skins, some toothpaste, a lifeless bumblebee, a steel ball, pearls, some spaghetti, and a small turtle. The most bizarre item he carries in his pockets though, is far more disturbing --- a cat's eye!!! Why haven't the teachers reported this to the authorities? Where are the animal rights activists when you need them? Why hasn't the school psychologist been contacted so Marvin can receive a mental health evaluation? Of course, it is possible Marvin isn't such a strange little boy after all. What do you think? What's going on here?
Answer: Marvin loves to play the old game of marbles. He always carries some in his pockets, some of which include: onion skins (marbles with a swirled and layered design that resemble an onion); toothpaste (marbles with the colors of red, white, blue, black, and orange inside), bumblebee (a yellow marble with two black stripes on the sides), a ball bearing made of steel called a steelie), pearls (marbles with a mother-of-pearl coating), spaghetti (marbles with entwined lines inside them), a turtle (a marble with green and yellow wavy steaks), and a cat’s eye (a marble which closely resembles the eye of a cat).
Riddle: Clayton grew up in a very large, very poor family. With a dozen children(six boys and six girls) to care for, his parents had a hard time providing food and clothing for everyone. Also, as hot water had to first be boiled on the stove to mix with cold water for baths, Clayton and his siblings were lucky to be able to take a bath even one time a month. As he grew older, Clayton was able to obtain a good-paying job, and could afford to move into better housing where he had enough food and clean clothing for himself; but his habit of rarely taking a bath stuck with him. In fact, Clayton now only takes a bath once every two years or so, but no one at his office job(where he has to wear a suit and tie) has ever complained of his having any body odor, or made any negative references concerning his personal hygiene. They say old habits die hard, but this one grew by leaps and bounds!! Refusing to take even a sponge bath, how does Clayton manage to keep his job without offending any of his co-workers?
Answer: Clayton takes a shower every day.
Riddle: Four friends– Sam, Evan, Rachel, and Olivia– go out for lunch one Saturday morning. The friends order their food, as well as a big pot of blackberry tea. Sam and Rachel decide to drink the tea, but Evan and Olivia do not; Evan takes a large cup of coffee, and Olivia takes lemonade. After drinking the tea, Sam and Rachel feel sick and pass out. When police officers and paramedics arrive, the officers question Evan and Olivia–why did they order different drinks? Evan says, "I took a large cup of coffee because I didn't sleep well last night, and I needed a lot of caffeine to help me stay awake and alert,". Olivia says, "I took lemonade because I am terribly allergic to raspberries. Even one bite gives me a severe rash!". Who poisoned the tea?
Answer: Olivia poisoned the tea. She said she was allergic to raspberries, but the tea the friends ordered contained blackberries, not raspberries. Olivia lied about her allergy to have an alibi.
Riddle: Mrs. Tatum assigned a massive summer assignment to her students–they each had to learn a new language. It could be any language they wanted to learn, though. After the summer break, Mrs. Tatum asked her students what languages they had been learning, and how it had been going. Christopher said, "I enjoy learning Mandarin!". Anthony said, "I've been learning Brazilian; it was really difficult but interesting!". Gianna said, "I chose to learn German because my ancestors are from Germany!". Mrs. Tatum did not believe one of her students. Who is lying?
Answer: Anthony is lying. He couldn't be learning Brazilian because this "language" doesn't exist; people speak Portuguese in Brazil.
Riddle: Spencer wakes up in the middle of a forest. A few seconds later, a witch and three magic tunnels–a red, a yellow, and a blue–appear in front of the guy. The witch tells Spencer, "Two of these tunnels will make you disappear forever, and the other one will send you back to your house. Listen to these clues VERY carefully,". Clue 1: Choose the red tunnel, and you won't not disappear. Clue 2: It's a lie to say that the yellow tunnel isn't dissimilar. Clue 3: The blue tunnel doesn't have less in common with the red than with the yellow. Which tunnel should Spencer choose?
Answer: Spencer should choose the yellow tunnel. If he chooses the red tunnel, he will not NOT disappear; in other words, Spencer WILL disappear if he enters the red tunnel. We can therefore exclude the red tunnel. If he chooses the blue tunnel, he will also disappear; this is because the blue tunnel doesn't have less in common with red than yellow. In other words, the blue tunnel has more in common with red than yellow, so the blue tunnel will also make Spencer disappear. Choosing the yellow tunnel is the safest option because if it's a lie to say that yellow isn't dissimilar, the truth is that yellow IS different from the red and blue tunnels.
Riddle: Mrs. Harris went to the police station to file a report. She said that someone had attacked her. Here is her story: "I was in the restaurant bathroom, fixing my makeup. Suddenly, a stranger hit me on the head! I didn't see what this person looked like because he approached me from behind!". The police officer refused to file the report and sent Mrs. Harris home. Why?
Answer: If Mrs. Harris was fixing her makeup, she was most likely looking in the mirror (after all, she wouldn't want to ruin her makeup, right?). If someone had approached the woman from behind, she would have DEFINITELY seen what he or she looked like. Therefore, Mrs. Harris lied, and made up the whole story.
Riddle: Charlotte is a runaway criminal. She needs to get a haircut so that the police officers do not recognize her right away. There are only two hairdressers in her town, however; the first salon is run by Thomas–he has a super messy haircut and his shop is super dirty. And the second salon is run by Debbie–she has a super neat haircut and her shop is super clean. Which hairdresser should Charlotte choose for a nice haircut?
Answer: Charlotte should choose Thomas. Since there are only two hairdressers in her town, they can't cut their own hair; they gave haircuts to each other (Thomas cuts Debbie's hair, and Debbie cuts Thomas' hair). Since Thomas must have been the one to give Debbie a neat haircut, and Debbie must have been the one to give Thomas a messy haircut, Thomas is much more professional, and Charlotte should get her hair done by him.
Riddle: Chelsea works in a department store. One day, a mute woman walks up to her. The woman puts her finger in one ear, and makes a circular motion with her fist near her other ear. Chelsea immediately understands that the woman wants a pencil sharpener. Next, a deaf man comes up to Chelsea. How can he explain to her that he wants a pair of scissors?
Answer: The man can just say it. He's DEAF, not mute; the guy can't hear, but it doesn't mean that he can't SPEAK.
Riddle: During the first week of July, Jenny came back from a business trip and saw that her house had been burgled. She called the police and told them the following story: "My business trip was supposed to be between the 29th and the 31st of the previous month, so I was supposed to be gone for three days. However, I returned just now and found my house in a huge mess! Someone must have robbed me!". Jenny was arrested for a false report. Why?
Answer: Jenny came back during the first week of July, so the previous month was June. She couldn't be away for business between the 29th and the 31st of June because June 31st doesn't exist; there are only 30 days in June.
Riddle: Four friends went out one night. During the trip back, they tried to squeeze under an umbrella, but it was too small for them to fit through. Still, everyone managed to stay dry by the time they arrived home. How can this be?
Answer: It wasn't raining. I didn't say that it was raining after all!
Riddle: I sleep with 2 legs and walk with 3. What am I?
Answer: A man with a Cane.
Riddle: You are a monster hunter. You know that werewolves either tell only truths or only lies. One day, you meet up with your friends-Daniel and Cameron-and ask if either one of them is a werewolf. Daniel says, "Cameron is a lying werewolf. And I'm a human,". And Cameron says, "Daniel is telling the truth,". Can you identify who is who?
Answer: You know that werewolves cannot tell half-truths, so Daniel's statements have to both be either true or false. If they are both true, then Daniel is a human, and Cameron is a lying werewolf. But then, Cameron is telling the truth, too. This contradicts Daniel's second statement. Therefore, both of Daniel's statements are false, and Cameron is also lying. It means that Daniel is a werewolf and Cameron is a lying human.
Riddle: Betty and Becky are twins, who love to lie on certain days. Betty lies on Mondays, Tuesdays, and Wednesdays, while Becky lies on Thursdays, Fridays, and Saturdays. One day, you come up to the twins and ask them what day it is. They say, "Yesterday was one of my lying days," in unison. What day is it?
Answer: It can't be Sunday because both girls would be telling the truth…and someone is obviously lying now. It can either be Monday or Thursday because on those days, either Betty or Becky lies. But if it's Monday, both girls would lie saying yesterday was a lying day. Therefore, it's Thursday; Betty is telling the truth, and Becky is lying.
Riddle: Reuben, a renowned author, was found unconscious in his study on a Sunday morning. His agent, Kelly, called the police to report it. When the officers arrived, they questioned three suspects: Anna the nanny, Mike the cleaner, and Mark the driver. Anna said that she had driven Reuben's daughter to school. Mike said that he had a day off and spent it with his family. And Mark said that he had taken Reuben's car to the car wash. Who attacked Reuben?
Answer: Anna the nanny is lying. Children don't go to school on Sundays.
Riddle: When summer break ended, Mila told her friends about her vacation in Africa. Mila said, "Oh, it was great! But on the last day of my trip, a massive volcanic eruption happened; it didn't spoil my vacation only because I flew home that day,". Mila's friends didn't believe her. Why?
Answer: All flights must get canceled when a volcanic eruption occurs, so Mila couldn't have flown home on the last day of her vacation; she's lying.