Brain Teasers
Riddle: Janet is a janitor of a large museum. One day, while cleaning the ladies' room, she spots a precious ring with red gems. When Janet leaves the ladies' room, three people–Sarah, Catherine, and Harold–show up to claim it. Sarah said that the ring belonged to her grandmother; emeralds fit her green eyes perfectly anyway. Catherine asked if the ring had an engraving etched inside, and if it was damaged in any way. Harold said that he lost the ring while washing his hands; he was going to propose to his girlfriend in a few days. Janet decided that the ring belonged to Catherine. Why?
Answer: If the ring belonged to Sarah, then she wouldn't have mentioned emeralds, because the stones on the ring are red, not green. And Harold wouldn't have been allowed in the ladies' room. Catherine was the only one who knew about the engraving on the ring, as well as how precious it is, so the ring must be hers.
Riddle: Mr. Plessy, one of the best pilots in his town, came to his insurance company to file a report. He said that someone had robbed him in the street, but he couldn't see what the robber had looked like because of his poor eyesight. The insurance manager refused to proceed with the case and called Mr. Plessy a liar. Why?
Answer: Mr. Plessy is a pilot, but it's impossible to work as one if you have poor eyesight.
Riddle: There are two species of citizens on a foreign planet: Hamburgs and Helphands. There are 10,000 Hamburgs, and Helphands make up 50% of the population. How many Helphands are on the foreign planet?
Answer: There are 10,000 Helphands on the foreign planet. If there are only two species of citizens on the planet, and Helphands make up 50% of the population, then Hamburgs must make up the other 50% of the population, with 10,000 of them. If there are 10,000 Hamburgs, then there are also 10,000 Helphands.
Riddle: A young man became famous one day when he gathered a quarter of a bushel (8 dry quarts) of a certain type of fruit, which many people call a vegetable. Evidently, this youth, whose first and last name both start with the same letter, was able to harvest these fruits (vegetables) after they had been placed into a solution of vinegar or brine while still on the vine. So, the questions which have never been answered concerning this story are #1: How many of these fruits/vegetables did he actually harvest, and #2: Where is the work of his labor now? Can you name this famous person who has the same first and last initials?
Answer: Peter Piper picked a peck of pickled peppers …
Riddle: Five friends-Albert, Brenda, Carl, Diana, and Eric–raced around a track. Albert finished before Brenda but after Carl. And Diana finished before Eric but after Brenda. In what order did each friend finish?
Answer: From first to last, the order in which the friends finished is: Carl, Albert, Brenda, Diana, and Eric.
Riddle: Angela had a disease that required her to take pills. One day, her doctor prescribed her three pills that would help to cure her of her disease. She needed to take one pill every 30 minutes. How much time will pass before Angela takes all of the pills?
Answer: One hour will pass. Once Angela takes the first pill, she'll wait 30 minutes. After that, she will take the second pill and wait another 30 minutes. And then she will take the last pill after that. After all, the first pill doesn't take 30 minutes to take.
Riddle: Peter likes tomatoes, but not potatoes; he likes cucumbers, but can't stand carrots; Peter also enjoys grapes, but not lettuce. And he likes squash, but not onions. Would Peter like pumpkins or apples more?
Answer: Peter would like pumpkins more, because he only likes fruits and vegetables that grow on vines. Pumpkins grow on vines, while apples do not.
Riddle: A butterfly flies to a rock in the middle of a huge lake and stops to rest. If it swims North, it's five minutes to the mainland. If it swims East, it's four minutes to the mainland. If it swims South, it's three minutes to the mainland. And if it swims West, it's two minutes to the mainland. In which direction should the butterfly swim?
Answer: The butterfly shouldn't swim in any direction because butterflies don't swim; they fly!
Riddle: "What are you looking at so intently?" he said. "Oh, it's just a musical symbol," she replied. "No. I'm pretty sure that’s English money," he answered. "Well, now that I think about it, I'm quite certain it is a total of 0.45359237 kilograms,” she responded. "Are you trying to impress me?" he retorted. "No. I'm just stating an important fact," she said." "You must learn to keep things simple! It is nothing more than a type of cake," he corrected. "You are both wrong," said a stranger who was eavesdropping on their strange conversation. "That's what Lucy frequently threatens to do to her brother Linus in the Peanuts comic strip." What in the world are these people talking about?
Answer: Pounds: A musical sharp sign looks like a pound sign; English money is designated in pounds; 0.45359237 kilograms =1 pound; pound cake is a type of cake; and The Peanuts character (Lucy) often threatens to pound her brother for his non-cooperation with her demands.
Riddle: Two young adventurers, Tristen and Lawrence, travel to the state of Pennsylvania in search of the legendary Phantom --- to face it, and conquer it, if possible. The Phantom is famous for exacting revenge on any who challenge it, but the two daredevils are undaunted. When the brave crusaders finally spot the Phantom, they are awestruck, and approach the Phantom as if they are hypnotized. The Phantom’s henchmen then put the two into a strange carriage, restraining them with metal bars. The Phantom then uses a chain to hoist the pair high into the air. Suddenly, they are released and plummet downward, where they are roughly tossed to and fro until Tristen throws up on Lawrence as a result of this abuse. However, because they are both still alive and breathing, they are released from their restraints by the henchmen, and are permitted to leave. Although it sounds truly unbelievable, Tristen and Lawrence decide to return to challenge the Phantom that very same day. Have these two adventurers lost their minds? Are they both in need of immediate mental health treatment; or is there a more sensible explanation for these events?
Answer: The Phantom’s Revenge is a famous roller coaster located in West Mifflin, Pennsylvania.
Riddle: Simon Simpleton was born in London, England. His mother was Welsh and his father Scottish. When Simon was eight his mother died. When Simon was ten his father married an Irish women and suddenly Simon had an Irish sister. When Simon was twenty four he graduated as a lawyer and took a job in Edinburgh, Scotland. He is now sixty six. Why can he not be buried on the banks of Loch Lomond in his favourite village of Luss, in Bonnie Scotland?
Answer: Because he is still alive!
Riddle: I'm alive, but without breath; I'm as cold in life as in death; I'm never thirsty, though I always drink. What am I?
Answer: A fish.
Riddle: You walk into a room and see a bed. On the bed, there are two dogs, four cats, a giraffe, five cows, and a duck. There are also three chickens flying above the bed. How many legs are on the floor?
Answer: There are six legs on the floor. All of the animals are on the bed and no other furniture is mentioned in the room. Four legs from the bed and your two legs because you are standing in the room.
Riddle: A woman, who is the executive director of a large and profitable business, has an interesting job description. Among her many duties, she is primarily responsible for the gathering and dispensing of pictures of dead people. In fact, she has a special room within her facility which is specifically designed to hold many thousands of these pictures, and she is assigned the task of securing this room against any and all unscrupulous scoundrels who might try to steal them. Her gang of laborers spend most of the week exchanging these pictures with those who frequent her establishment, sometimes collecting, and sometimes giving these pictures to others at their request. This woman and her employees appear to enjoy their work, as they all carry these pictures of deceased individuals in their purses and wallets outside of work. Is this woman and her gang of laborers morbidly deranged, or are they more normal than they initially appear to be? Just what is this business in which these people are engaged?
Answer: The woman is a bank president, and her gang of laborers are the tellers who work there. The pictures of dead people are the many thousands of bills and coins, each with a picture of a former President or a high ranking official who are now deceased, from our past government.
Riddle: Lucille had recently received her real estate license and was out evaluating a bunch of properties in a certain neighborhood. As she traveled around the area, she saw some properties which were very expensive, and others that were more affordable. The area was sprinkled with a mixture of little greenhouses, a couple of hotels, a few businesses, and she noticed there was also some access to railway travel. Some of these properties were for sale but others were not. The bizarre thing is, Lucille ended up in jail three separate times that day and had to be bailed out on each occasion! She received no traffic citations and swears she did absolutely nothing wrong, and yet, she was incarcerated three times that day. What do you suppose happened that caused her to be locked up in jail three times in one day?
Answer: Lucille had indeed recently received her real estate license, however, that really had little to do with the fact she was playing a game of Monopoly with some friends; and unfortunately for her, landed in jail three times during the game, and had to bail herself out so she could continue playing.
Riddle: Terry had been driving for nearly an hour when he encountered a backup of several cars which were all waiting to pass through a tunnel. He was listening to the weather report on his car's radio while awaiting his turn when he heard that a severe mixture of snow and rain accompanied by flash flooding and powerful winds were expected to strike the area within minutes. Terry dreaded this type of dangerous winter driving, so he wanted to get home quickly. As he paid the required fee to pass through the tunnel, Terry could only think about the weather report and the severe driving conditions predicted. Suddenly, a downpour of water, followed by a curtain of liquid white covered Terry's car. He did not use his windshield wipers though, and in fact, he removed both hands from the steering wheel just as another downpour of water blasted his car. A few seconds later, a second deluge of water crashed down on his car, followed by a mighty wind. At that point, Terry again grasped the steering wheel and regained control of the car. After these events, Terry was able to drive home safely. Did Terry panic during this encounter by not using his windshield wipers and removing his hands from the steering wheel, or is Terry a better driver than these events indicate?
Answer: The tunnel Terry went through was a car wash. A driver is always supposed to take his hands off the steering wheel and avoid using windshield wipers when the car is passing through the soap, water, and powerful drying wind at the end.
Riddle: Ron and Terry are both dressed in camouflage clothing and are completely surrounded by dead bodies. As veterans of the Army, they are both on a mission to locate some of their comrades. Neither Terry nor Ron are carrying any weapons, but they have no fear of being harmed. They look about the terrain which surrounds them, but all they see are grass and large and small stones. Terry jumps up on one of the large stones to get a better view of their surroundings, but Ron suggests to Terry that his standing on the big stone might be viewed as disrespectful, and Terry jumps down. "I counted 27 flags while I was up there," says Terry to Ron, "so let's go check them out." In what activity are Ron and Terry engaged?
Answer: Ron and Terry are veterans who are looking for the grave sites of some of the soldiers they served with in the Army. The large and small stones are tombstones, and the American flags mark the graves of the veterans who are buried in that cemetery.
Riddle: Sixteen players start the game. One player gets involved in every play but doesn't care who wins. Each team has seven players who stay loyal to their team, but despite their loyalty, they often leave before the game is over. The final player has no loyalty to either team, but is committed to the game and never leaves until the end. What game is it?
Answer: Pool (i.e. 8-ball billiards).
Riddle: Zane is a big boss in a hugely successful company. Every week, however, he finds out that one of his worst employees has been stealing his documents. After a whole year of stolen documents, Zane rounds up his three worst employees– Kelly, Raymond, and Natalia– and questions them. Kelly says, "Raymond has been stealing your documents!". Raymond says, "I haven't been stealing your documents!". Natalia says, "I haven't been stealing your documents, either!". Only one of the employees is telling the truth. Who has been stealing the documents, and which employee is telling the truth?
Answer: Natalia has been stealing the documents. Raymond is telling the truth. If Kelly was the one stealing the documents, then she would be lying, and Raymond would be telling the truth. But then, Natalia would also be telling the truth, which goes against the condition that only one employee is telling the truth. If Raymond was the one stealing the documents, then he would be lying, Kelly would be telling the truth, and Natalia would also be telling the truth. This also contradicts that only one employee is honest. If Natalia was the one stealing the documents, then she is lying. But then, who is telling the truth? It's not Kelly, because if it was so, both she and Natalia would be telling the truth, and Raymond would be lying, which doesn't meet the requirements. Therefore, Raymond is telling the truth, Kelly and Natalia are both lying, and Natalia is the one stealing the documents.
Riddle: Irene and her friend Mark were walking down the street when they saw two houses. Mark wanted to play a game with Irene. He said, "One family lives in each house. And each family has two pets: either dogs or cats. The first family has a dog who likes dry food, while the other pet likes canned food. The second family has a 6-year-old dog and a newborn pet. If you can guess which family has a cat, I'll take you out for lunch." Irene manages to get the riddle right, and the two of them go out for lunch. Which family did she choose?
Answer: Irene chose the first family. There are three different possibilities for the pets that the first family has: 1) an older dog and a younger cat; 2) a younger dog, and an older cat, and; 3) two dogs. Two of these options involve a cat, and all of them are equally possible, so the chance of the first family having a cat is 2/3. There are two different possibilities for the pets that the second family has: 1) a 6-year-old dog and a newborn dog, and; 2) a 6-year-old dog and a newborn cat. One of these options involves a cat, and both of them are equally possible, so the chance of the second family having a cat is 1/2. Irene's odds of winning will be higher if she chooses the first family.