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  2. List of paradoxes - Wikipedia

    en.wikipedia.org/wiki/List_of_paradoxes

    The term paradox is often used to describe a counter-intuitive result. However, some of these paradoxes qualify to fit into the mainstream viewpoint of a paradox, which is a self-contradictory result gained even while properly applying accepted ways of reasoning.

  3. Unexpected hanging paradox - Wikipedia

    en.wikipedia.org/wiki/Unexpected_hanging_paradox

    The unexpected hanging paradox or surprise test paradox is a paradox about a person's expectations about the timing of a future event which they are told will occur at an unexpected time. The paradox is variously applied to a prisoner's hanging or a surprise school test.

  4. Category:Philosophical paradoxes - Wikipedia

    en.wikipedia.org/wiki/Category:Philosophical...

    New riddle of induction; O. Omnipotence paradox; P. Paradox of analysis; Paradox of fiction; Paradox of hedonism; Paradox of nihilism; Polanyi's paradox; Problem of ...

  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. 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.

  7. Monty Hall problem - Wikipedia

    en.wikipedia.org/wiki/Monty_Hall_problem

    The problem is a paradox of the veridical type, because the solution is so counterintuitive it can seem absurd but is nevertheless demonstrably true. The Monty Hall problem is mathematically related closely to the earlier three prisoners problem and to the much older Bertrand's box paradox.

  8. Barber paradox - Wikipedia

    en.wikipedia.org/wiki/Barber_paradox

    The barber paradox is a puzzle derived from Russell's paradox. It was used by Bertrand Russell as an illustration of the paradox, though he attributes it to an unnamed person who suggested it to him. [1] The puzzle shows that an apparently plausible scenario is logically impossible.

  9. Pinocchio paradox - Wikipedia

    en.wikipedia.org/wiki/Pinocchio_paradox

    The Pinocchio paradox arises when Pinocchio says "My nose grows now" and is a version of the liar paradox. [1] The liar paradox is defined in philosophy and logic as the statement "This sentence is false." Any attempts to assign a classical binary truth value to this statement lead to a contradiction, or paradox. This occurs because if the ...