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  2. Monty Hall problem - Wikipedia

    en.wikipedia.org/wiki/Monty_Hall_problem

    The game host then opens one of the other doors, say 3, to reveal a goat and offers to let the player switch from door 1 to door 2. The Monty Hall problem is a brain teaser, in the form of a probability puzzle, based nominally on the American television game show Let's Make a Deal and named after its original host, Monty Hall.

  3. Postage stamp problem - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_problem

    The postage stamp problem (also called the Frobenius Coin Problem and the Chicken McNugget Theorem [1]) is a mathematical riddle that asks what is the smallest postage value which cannot be placed on an envelope, if the latter can hold only a limited number of stamps, and these may only have certain specified face values.

  4. Riddle - Wikipedia

    en.wikipedia.org/wiki/Riddle

    A riddle is a statement, question, or phrase having a double or veiled meaning, put forth as a puzzle to be solved. Riddles are of two types: enigmas, which are problems generally expressed in metaphorical or allegorical language that require ingenuity and careful thinking for their solution, and conundra, which are questions relying for their effects on punning in either the question or the ...

  5. The Viral '30 Cows and 28 Chickens' Riddle Is Trickier Than ...

    www.aol.com/viral-30-cows-28-chickens-110600518.html

    A lot of the videos out there depict that the riddle doesn't even make sense, but we can assure you that it does! ... Am I' Riddles for Kids and Adults. The Riddle Answer for 30 Cows and 28 ...

  6. Solve this birthday riddle with a little logic and math power

    www.aol.com/solve-birthday-riddle-little-logic...

    The 10 possible dates the old woman gives you, Barbara, and Charles are listed below, in chronological order. Charles: “I’m not sure when her birthday is, but I am sure that Barbara can’t ...

  7. Can You Solve the ‘A Man Steals $100 From a Shop’ Riddle?

    www.aol.com/solve-man-steals-100-shop-111000916.html

    At first glance, this riddle involving various dollar amounts would lead you to think some complex math is required to solve it. There's a clear loss of $100 upfront when the money is stolen.

  8. Wason selection task - Wikipedia

    en.wikipedia.org/wiki/Wason_selection_task

    Which card or cards must be turned over to test the idea that if a card shows an even number on one face, then its opposite face is blue? The Wason selection task (or four-card problem) is a logic puzzle devised by Peter Cathcart Wason in 1966. [1] [2] [3] It is one of the most famous tasks in the study of deductive reasoning. [4]

  9. 10 Hard Math Problems That Even the Smartest People in the ...

    www.aol.com/10-hard-math-problems-even-150000090...

    Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes.” You check this in your head for small numbers: 18 is 13+5, and 42 is 23+19.