Logic Riddles

 
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Two Stones (medium)

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By JefferyJon

Question: The rich landlord wants to marry the beautiful farmer's daughter. He tells the daughter that if she doesn't marry him, he will evict her father from the farm and they will be homeless. She begs for mercy. Slyly, the landlord agrees to allow her one chance to stay. He pulls a bag from his pocket, and reaches down and picks up 2 stones from the rocky path then places them in the bag. Reach into the bag and pull out one stone. If you pull out the black stone you will agree to marry me. If you pull out the white stone you and your father can live here rent free. The problem is that she knows that he picked up two black stones and no matter which one she selects she will be forced to marry him. What can she do to avoid marrying the greedy landlord?

Answer: They are standing on a rocky path. She reaches into the bag, pulls out one of the black stones and then pretending to be clumsy drops it onto the rocky path. Oh my, she exclaims.... I dropped it, but whichever color stone is still in the bag will tell us which color stone I dropped!

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By ilikepie

Question: There is a mother dog. She gives birth to four puppies named: Sloppy, Poppy, Doppy, and Roppy. What is the mother's name.

Answer: There is no question, so there is no answer. Everything is a statement. If you think that the question is, what is the mother's name?, her name is What. The sentence ends with a period, not a question mark, therefore indicating that the sentence is a statement, not a question.

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Question: Three gods A, B, and C are called, in no particular order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is a completely random matter. Your task is to determine the identities of A, B, and C by asking three yes-no questions; each question must be put to exactly one god. The gods understand English, but will answer all questions in their own language, in which the words for yes and no are da and ja, in some order. You do not know which word means which.

What three questions can you ask?

Answer: A possible solution is:

Q1: Ask god B, "If I asked you 'Is A Random?', would you say ja?". If B answers ja, either B is Random (and is answering randomly), or B is not Random and the answer indicates that A is indeed Random. Either way, C is not Random. If B answers da, either B is Random (and is answering randomly), or B is not Random and the answer indicates that A is not Random. Either way, you know the identity of a god who is not Random.

Q2: Go to the god who was identified as not being Random by the previous question (either A or C), and ask him: "If I asked you 'Are you False?', would you say ja?". Since he is not Random, an answer of da indicates that he is True and an answer of ja indicates that he is False.

Q3: Ask the same god the question: "If I asked you 'Is B Random?', would you say ja?". If the answer is ja, B is Random; if the answer is da, the god you have not yet spoken to is Random. The remaining god can be identified by elimination.

For more information about the answer visit the following Wikipedia page.

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riddle (medium)

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By [email protected]

Question: A chicken gives meat and egg while cow gives us milk. Find another who gives us all these?

Answer: A shopkeeper!

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Question: What temperature is twice as hot as 0 degrees Celsius?

Answer: 273.15 degrees Celsius. When making conversions like this you must convert to the Kelvin scale since it is the only one that works on a scale beginning with 0.

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