Riddle: Jasmine was the worst student in her class. One day, her instructor, Mr. Collins, gave her a chance to stay in her class and not be expelled. He said, "Give me a statement. If the statement is true, you will not be expelled from the class. And if the statement is false, you will be expelled from the class. So, what do you say?". What should Jasmine say to stay in her class?
Answer: Jasmine should say, "I will be expelled from the class,". If we suppose that the statement is true, then Jasmine would not be expelled from the class. But then, it makes the statement false. And if we suppose that the statement is false, then Jasmine would be expelled from the class. But then, it makes the statement true. This phrase creates a paradox, as it cannot be true AND false at the same time.
Brain Teasers
Riddle: Jennifer is always late for work. One day, she comes to work late as usual, which angers her boss. But, her boss is more lenient today and gives Jennifer a chance to keep her job. If she solves his rebus puzzle, Jennifer won't be fired. The boss says, "I'm A B C D E F G H I J K L M N O P Q R S T V W X Y Z!". Luckily, Jennifer was a smart girl and managed to keep her job. What did the rebus puzzle say?
Answer: "I'm missing you". "A B C D E F G H I J K L M N O P Q R S T V W X Y Z" is missing the letter "U", which sounds like "I'm missing you (U)".
Riddle: Harry is in a history competition with two other students–Renèe and Tyler. The rules are as follows: A student will choose another student to target. A history question will be read out, and the student will give his or her answer. If the answer is correct, the target is eliminated. And if the answer is incorrect, the target stays in the game. This will happen until only one student remains. Harry isn't very good in history; his odds of answering correctly are 1/3. Renèe's odds are a little better–2/3. And Tyler is a history ace, with his odds of giving the correct answer being 3/3. Every student knows everyone else's odds. To be fair, Harry will begin; then, the turn will pass to Renèe, then to Tyler, and then to Harry, and so on until one player remains. How can Harry have higher chances to win?
Answer: On Harry's first turn, he should give the incorrect answer on purpose. If he targets Renèe and manages to eliminate her, then it's just Harry and Tyler; however, Tyler will definitely eliminate Harry because HIS odds are much higher. And if Harry targets Tyler and manages to eliminate him, then it's just Harry and Renèe; however, Renèe might eliminate Harry because she has higher odds. If Harry purposefully answers incorrectly, the turn will simply move to Renèe, who will answer next. On Renèe's first turn, she will likely target Tyler because he has higher odds than her. If she manages to eliminate him, then it's just Harry and Renèe. Harry will be going first with his shot at winning the competition. If Renèe doesn't eliminate Tyler, then it will be HIS turn; Tyler will target Renèe and eliminate her for sure due to his odds being higher than hers. Although Harry will have to go against Tyler in the end, it's still a fair situation because Harry will still be going first with a chance to win.
Brain Teasers
Riddle: Emma was arrested for robbing a bank. The police wanted to arrest Emma's boyfriend as well because he was supposedly an accomplice. The officers found four men-Kevin, Miles, Paul, and Stanley-and interrogated them. One of them is the boyfriend who is lying. Another person was Emma's brother, who did not assist with the robbery but was also lying because he wanted to help. And the other two boys were innocent and telling the truth. Each person says the following: Kevin: Stanley is her boyfriend. Miles: Paul is lying. Paul: Kevin is lying. Stanley: Miles is not her brother. Who is Emma's brother, and who is her boyfriend?
Answer: Kevin is Emma's brother, and Miles is her boyfriend. If Kevin is telling the truth, then Stanley is lying because the boyfriend lies. This means Miles is also lying because according to these conditions, Miles IS the brother who is lying. But then, Paul is telling the truth. It contradicts that Kevin is telling the truth because both of them cannot be truthful at the same time. So, Kevin is lying, Paul is telling the truth, and Miles is lying. By default, Stanley is the other man telling the truth. The two liars are Kevin and Miles; they are Emma's boyfriend and brother. Since Stanley said that Miles is NOT her brother, and that statement is true, it means Kevin is her brother, and Miles is her boyfriend.
Riddle: Mr. Martinez is a philosophy teacher at a prestigious university. One day, he places a pencil onto his desk and gives his students an assignment: to write a short essay on the following topic- why the pencil does not exist. The student with the most convincing argument would get an A, while everyone else would get a D. An hour later, all of the students handed in their papers; most of them filled up the front and back of their papers, but one boy wrote just two words and he got the A. What words did he write?
Answer: The boy wrote, "What pencil?".
Brain Teasers
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.
Brain Teasers
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: When the killer first entered the home of Mrs. Vivian Von Trapp, she was unaware of its presence for several days. She was doing the dishes one morning when she saw it basking in the sunshine which poured through her open kitchen window. As Vivian glanced toward the peaceful scene, she saw the killing machine in action for the very first time, as it slowly closed in for the kill, claiming its first victim of that day. This gave her a creepy sensation, and triggered a bizarre mental flashback of a scene from her teenage years when she tried putting on super-long false eyelashes in front of a mirror. Each time she closed her eyes, even slowly, the lashes would stick together every time. It took Mrs. Von Trapp some time to get this weird vision out of her head, but watching the killing machine reminded her of this. Later, she learned her son Dawson had accompanied the murderer into their home as he returned from his high school biology class, but neither Mrs. Von Trapp nor her son ever had any fear of it, despite its reputation as a known killer. It was at least ten days before another killing took place, and another life snuffed out of existence. This seemed to be its killing pattern. Mrs. Von Trapp began to feel a kind of twisted satisfaction in witnessing the deaths of the executioner’s victims; in fact, she felt happy about the deaths, not sad. Was Vivian a mentally disturbed individual who enjoyed witnessing death, or is there a much simpler and more pleasant explanation for these events? Just what was this unusual killing machine; who were its victims; and why did neither the mother nor her son have any fear of it?
Answer: The “killing machine” was a Venus Fly Trap plant which Dawson brought home from his high school biology class and put in his mother’s kitchen. Every ten days or so, it would catch a fly, which pleased Vivian, as she despised flies in her kitchen.
Riddle: Suppose you want to send in the mail a valuable object to a friend. You have a box which is big enough to hold the object. The box has a locking ring which is large enough to have a lock attached and you have several locks with keys. However, your friend does not have the key to any lock that you have. You cannot send the key in an unlocked box since it may be stolen or copied. How do you send the valuable object, locked, to your friend - so it may be opened by your friend?
Answer: Send the box with a lock attached and locked. Your friend attaches his or her own lock and sends the box back to you. You remove your lock and send it back to your friend. Your friend may then remove the lock she or he put on and open the box.
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: 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: I Make Reading A Challenge, And That Can Cause Some Damage. I Am Difficult To Manage, But When That Happens, The Passage Is Much Less Savage. I Make Many People Frown, But The Answer Is Just To Slow Down. I Know This Is Not What You Had Planned, I Just Hope You Will Understand. What Am I?
Answer: I'm Dyslexia.
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.