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  2. I Tried the 'Harvard Riddle'—the 'Hardest Riddle in the World ...

    www.aol.com/tried-harvard-riddle-hardest-riddle...

    According to a YouTuber who shared this video with over 23 million views, 98% of Harvard students can't solve this riddle, which is also referred to as the "I Turn Polar Bears White" riddle. I ...

  3. The Hardest Logic Puzzle Ever - Wikipedia

    en.wikipedia.org/wiki/The_Hardest_Logic_Puzzle_Ever

    The Hardest Logic Puzzle Ever is a logic puzzle so called by American philosopher and logician George Boolos and published in The Harvard Review of Philosophy in 1996. [ 1 ] [ 2 ] Boolos' article includes multiple ways of solving the problem.

  4. Notpron - Wikipedia

    en.wikipedia.org/wiki/Notpron

    It has been named as "the hardest riddle available on the internet". [3] Regarded as one of the first of the online puzzle game genre, Notpron follows a standard puzzle game layout, where the player is presented with a webpage containing a riddle and must find the answer to the riddle in order to proceed to the next webpage.

  5. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    Flow of dollars in the riddle – comparing the sum of values circled in yellow (10+10+10=30) with the sum of absolute values of those shaded yellow (9+9+9+2=29) is meaningless. The missing dollar riddle is a famous riddle that involves an informal fallacy. It dates to at least the 1930s, although similar puzzles are much older. [1]

  6. 10 Hard Math Problems That Even the Smartest People in the ...

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    Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...

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

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    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. Yet ...

  8. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    This is a list of puzzles that cannot be solved. An impossible puzzle is a puzzle that cannot be resolved, either due to lack of sufficient information, or any number of logical impossibilities.

  9. Talk:The Hardest Logic Puzzle Ever - Wikipedia

    en.wikipedia.org/wiki/Talk:The_Hardest_Logic...

    The Hardest Logic Puzzle Ever is equal to some puzzle x such that x was authored by Boolos and was based on some puzzle y such that y was authored by Smullyan. PhysicistQuery 21:37, 18 July 2007 (UTC) I know I won't convince you - you are wedded to the puzzle as you first met it.