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  2. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    The solution appears very obvious if the owner withdraws every day only $10 from $50. To add up 40 + 30 + 20 + 10 using the same pattern from above would be too obviously wrong (result would be $100). The answer to the question, "Where did the extra dollar come from?" can be found from consecutively adding the bank rest from three different days.

  3. Monty Hall problem - Wikipedia

    en.wikipedia.org/wiki/Monty_Hall_problem

    The answer to the first question is ⁠ 2 / 3 ⁠, as is shown correctly by the "simple" solutions. But the answer to the second question is now different: the conditional probability the car is behind door 1 or door 2 given the host has opened door 3 (the door on the right) is ⁠ 1 / 2 ⁠.

  4. 140 fun trivia questions for kids (and answers) - AOL

    www.aol.com/112-engaging-trivia-questions-kids...

    Trivia questions for kids can be brain-bending fun for the whole family. Asking kids thought-provoking questions is a great way to engage their critical-thinking skills, according to Laura Linn ...

  5. Cheryl's Birthday - Wikipedia

    en.wikipedia.org/wiki/Cheryl's_Birthday

    After the question went viral, some people suggested August 17 as an alternative answer to the question. [11] This was rejected by the Singapore and Asian School Math Olympiads as an invalid answer. [11] The solutions that arrive at this answer ignore that the latter part of:

  6. Millennium Prize Problems - Wikipedia

    en.wikipedia.org/wiki/Millennium_Prize_Problems

    The question is whether or not, for all problems for which an algorithm can verify a given solution quickly (that is, in polynomial time), an algorithm can also find that solution quickly. Since the former describes the class of problems termed NP, while the latter describes P, the question is equivalent to asking whether all problems in NP are ...

  7. Ages of Three Children puzzle - Wikipedia

    en.wikipedia.org/wiki/Ages_of_Three_Children_puzzle

    Because the census taker knew the total (from the number on the gate) but said that he had insufficient information to give a definitive answer, there must be more than one solution with the same total. Only two sets of possible ages add up to the same totals: A. 2 + 6 + 6 = 14 B. 3 + 3 + 8 = 14

  8. Calling All Eggheads! 75 Easter Trivia Questions and Answers ...

    www.aol.com/calling-eggheads-75-easter-trivia...

    Easter Trivia Questions and Answers. Question: Easter always falls between which two dates? Answer: March 22 and April 25 Question: Is more candy sold for Easter, Christmas, Valentine's Day or ...

  9. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Prizes are often awarded for the solution to a long-standing problem, and some lists of unsolved problems, such as the Millennium Prize Problems, receive considerable attention. This list is a composite of notable unsolved problems mentioned in previously published lists, including but not limited to lists considered authoritative, and the ...

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