Brain Teasers
Riddle: I saw a dead cow walking on the street. How is this possible?
Answer: Simple. The person was walking down the street when the saw the dead cow.
Riddle: When I am filled I can point the way, When I am empty Nothing moves me, I have two skins One without and one within. What am I?
Answer: Glove.
Riddle: It keeps something that cannot be kept, And wakes you when you have slept. It may go slow or stop at times, But even then it chimes.  What is it?
Answer: An alarm clock. “It keeps something that cannot be kept”: Time can’t be held; a clock only measures it as it slips by. “And wakes you when you have slept”: The alarm rings to wake you. “It may go slow or stop at times”: Clocks can run slow or stop (dead battery, mechanical hiccup). “But even then it chimes”: Many clocks still chime or ring on the hour/alarm, even if their timekeeping isn’t perfect. 
Riddle: There is not wind enough to twirl That one red leaf, nearest of its clan, Which dances as often as dance it can. What is it?
Answer: The answer is “flame” (or “fire”). This riddle is related to a quote by Samuel Taylor Coleridge. The “one red leaf” is a metaphor for a tongue of flame on a low fire, which “dances” and flickers even when there isn’t enough wind to twirl an actual leaf. Coleridge’s imagery captures how a small flame closest to the embers moves restlessly with the slightest draft, appearing like a red leaf among its “clan” of other flames and coals
Riddle: What is large, yet never grows; has roots that cannot be seen; and is taller than trees?
Answer: A mountain.
Riddle: My brother has always been the adventurous type. Unlike me, a high ranking government official, my dear brother avoids politics whenever possible, choosing to pursue more dangerous interests. In fact, my brother has many enemies ----- enemies who have tried to kill him by gun, knife, drowning, poison dart, strangulation, and by trying to infect him with a deadly disease. His life has been threatened by a vicious killer dog, a deadly poisonous snake, and a very large rat. To top it all off, my brother is a drug addict. Even his partner, who has some medical knowledge, has been unsuccessful in freeing him from this addiction. So, with all of this information, can you state my name and the name of my brother?
Answer: My name is Mycroft Holmes, and the name of my celebrated brother is Sherlock.
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: Where does tomorrow come before yesterday, and where does today come before yesterday?
Answer: The answer is in dictionary. Explanation: Well the logic used to solve this riddle is that in the dictionary, words or letters are organized Alphabetically and hence Today comes before Yesterday because in the alphabet order alphabetically, the letter T comes before the Letter Y. I hope this helps
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.
Riddle: Mr. Wilson was found unconscious in his bedroom on a Saturday evening. There were just five other people in his house at the time of the murder: Mr. Wilson's wife, their chef, a butler, a housemaid, and a gardener. They all told the detective what they were doing that evening. Mrs. Wilson: I was reading a book in the living room. The chef: I was cooking breakfast. The butler: I was giving instructions to several workers in the living room. The housemaid: I was in the kitchen, washing the dishes. The gardener: I was in the greenhouse, watering plants. The detective arrested the culprit right away. Who was it, and how did the detective know?
Answer: In fact, there wasn't just one culprit–there were TWO culprits: the personal chef and the butler. The personal chef is the first culprit; the murder happened in the EVENING. He couldn't be cooking breakfast so late in the day. The butler is the second culprit; there were only 5 other people in the house, including himself, and almost none of them were in the living room, except for the wife (but she is not a WORKER). He couldn't be supervising so many workers.
Riddle: Simon and Bryce are two farmers. They want to see which of their chickens will lay more eggs in a month. Simon has four roosters; he claims that they can each lay 3 eggs in a day. Bryce has three hens; he claims that they can each lay 2 eggs in a day. The contest the two farmers propose happens in June. By the end of the month, which farmer will have the most eggs?
Answer: Bryce will have more eggs than Simon, simply because Simon is lying. Roosters don't lay eggs, so Simon will not have any eggs by the end of June.
Riddle: Dominick is the manager of a massively successful hotel. One day, his richest guest, Kim, calls him. She says that someone stole all of her money from the vault in her room. Dominick decides to question three other hotel guests–Sally, Lawrence, and Deborah. Dominick asks each of them just one question: "What were you doing within the last hour?" Sally says, "I was chilling in a hotel room with my boyfriend, and had nothing to do with the robbery." Lawrence says, "I was having lunch in the local sushi restaurant on the top floor. " Deborah says," I was swimming in the hotel swimming pool." Who is the robber?
Answer: Sally is the robber. Dominick never mentioned the robbery, but Sally started making excuses straight away.
Riddle: Miya had a birthday party. She invited three friends over-Derek, Trevor, and Amanda-who each gave her some gifts. In the middle of the party, Miya realizes that someone has stolen all of her gifts. She thinks it is one of the guests, so she questions them. Each guest makes two assertions-one truth and one lie. Derek: "I wasn't in the house when it happened. I know Amanda stole the gifts". Trevor: "Amanda stole them, I saw them. I already have enough gifts". Amanda: "I didn't steal the gifts. Derek tells the truth, he wasn't in the house". Who stole the gifts?
Answer: Trevor stole the gifts. If Derek was the thief, both of his assertions would have been false. And if Amanda was the thief, both of Derek's assertions would have been true. Both cases go against the rules, so Trevor is the thief.
Riddle: Chloe likes orange, but she hates it at the same time. How can this be?
Answer: Chloe likes the color orange, but hates orange fruit…or vice-versa (i.e. Chloe likes orange fruit, but hates the color orange).
Riddle: Helen went to a summer camp with her best friends. One day, the friends had to tell each other fun facts about themselves. Helen told her friends, "I was born on February 29th, so I have four times fewer birthdays than you guys. This year, I turned 17,". Helen's friends laughed at her and called her out for lying. Why?
Answer: February 29th only happens once every four years. Helen couldn't celebrate her 17th birthday on her actual birthday because this number can't be divided by four. So, either she wasn't born on February 29th, or she's not 17.
Riddle: Russell was watching TV when he got a call from the police. They said that they had found his friend unconscious, and asked him to come. As soon as Russell came, the officers arrested him. Why?
Answer: The officers didn't tell Russell the exact location to come to. How would the man know where to come if he didn't know what happened?