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"Pen" Riddles - Next 10 of 284.
Riddle:
You and nine other individuals have been captured by super intelligent alien overlords. The aliens think humans look quite tasty, but their civilization forbids eating highly logical and cooperative beings. Unfortunately, they're not sure whether you qualify, so they decide to give you all a test. Through its universal translator, the alien guarding you tells you the following: You will be placed in a single-file line facing forward in size order so that each of you can see everyone lined up ahead of you. You will not be able to look behind you or step out of line. Each of you will have either a black or a white hat on your head assigned randomly, and I won't tell you how many of each color there are.
When I say to begin, each of you must guess the color of your hat starting with the person in the back and moving up the line. And don't even try saying words other than black or white or signaling some other way, like intonation or volume; you'll all be eaten immediately. If at least nine of you guess correctly, you'll all be spared. You have five minutes to discuss and come up with a plan, and then I'll line you up, assign your hats, and we'll begin. Can you think of a strategy guaranteed to save everyone? Alex Gendler shows how.
Answer: Let's see how it would play out if the hats were distributed like this. The tallest captive sees three black hats in front of him, so he says "black," telling everyone else he sees an odd number of black hats. He gets his own hat color wrong, but that's okay since you're collectively allowed to have one wrong answer. Prisoner two also sees an odd number of black hats, so she knows hers is white, and answers correctly. Prisoner three sees an even number of black hats, so he knows that his must be one of the black hats the first two prisoners saw. Prisoner four hears that and knows that she should be looking for an even number of black hats since one was behind her. But she only sees one, so she deduces that her hat is also black. Prisoners five through nine are each looking for an odd number of black hats, which they see, so they figure out that their hats are white. Now it all comes down to you at the front of the line. If the ninth prisoner saw an odd number of black hats, that can only mean one thing. You'll find that this strategy works for any possible arrangement of the hats. The first prisoner has a 50% chance of giving a wrong answer about his own hat, but the parity information he conveys allows everyone else to guess theirs with absolute certainty. Each begins by expecting to see an odd or even number of hats of the specified color. If what they count doesn't match, that means their own hat is that color. And every time this happens, the next person in line will switch the parity they expect to see. So that's it, you're free to go. It looks like these aliens will have to go hungry, or find some less logical organisms to abduct.
Riddle:
Once upon a time there was a happy family in a dome-shaped house the family consisted of a mother, a father, a chef, a maid, a brother, a sister, and a little kitty named Bubbles. The mother and father went out one night and remembered to lock the doors. When they came home the cat had sadly passed. They questioned everyone. The boy said he was playing video games with the girl, the girl also said they were playing video games. The maid said she was dusting the corners in the house and the chef said he was sharpening the knife to cut the freshly baked apple pie. Who killed bubbles?
Answer: The maid! There are no corners in a dome shaped house. Mew!
Riddle:
What shoes do frogs wear in the summer?
Answer: Open toad shoes.
Riddle:
Where was the Declaration of Independence signed?
Answer: At the bottom.
Riddle:
A woman is put in a cement room without windows. The door is mechanically bolted shut and under strict watch so that nobody can come in or out. It is secured in every possible way. 24 hours later, the door is opened, and there are now 2 people inside the room. How is this possible?
Answer: The woman was pregnant.
Riddle:
When do you see sheep in ink?
Answer: When you draw them in pen!
Riddle:
Where do penguins keep their money?
Answer: In a snow bank!
Riddle:
What did the British man lose when he spent his money working out at the gym?
Answer: Pounds.
Riddle:
What happens to a small stone that works up its courage?
Answer: It becomes a little boulder.
Riddle:
A woman is sitting in her hotel room when there is a knock at the door. She opened the door to see a man whom she had never seen before. He said "Oh I'm sorry, I have made a mistake, I thought this was my room." He then went down the corridor and in the elevator. The woman went back into her room and phoned security. What made the woman so suspicious of the man?
Answer: You don't knock on your own hotel room door.
