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  2. Category:Coin flipping - Wikipedia

    en.wikipedia.org/wiki/Category:Coin_flipping

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  3. Penney's game - Wikipedia

    en.wikipedia.org/wiki/Penney's_game

    As this card-based version is quite similar to multiple repetitions of the original coin game, the second player's advantage is greatly amplified. The probabilities are slightly different because the odds for each flip of a coin are independent while the odds of drawing a red or black card each time is dependent on previous draws. Note that HHT ...

  4. St. Petersburg paradox - Wikipedia

    en.wikipedia.org/wiki/St._Petersburg_paradox

    The St. Petersburg paradox or St. Petersburg lottery [1] is a paradox involving the game of flipping a coin where the expected payoff of the lottery game is infinite but nevertheless seems to be worth only a very small amount to the participants. The St. Petersburg paradox is a situation where a naïve decision criterion that takes only the ...

  5. Coin flipping - Wikipedia

    en.wikipedia.org/wiki/Coin_flipping

    Tossing a coin. Coin flipping, coin tossing, or heads or tails is the practice of throwing a coin in the air and checking which side is showing when it lands, in order to randomly choose between two alternatives. It is a form of sortition which inherently has two possible outcomes. The party who calls the side that is facing up when the coin ...

  6. Quantum coin flipping - Wikipedia

    en.wikipedia.org/wiki/Quantum_coin_flipping

    In quantum cryptography, weak coin flipping (WCF) is defined to be a coin flipping problem where each player knows the preference of the other. [14] It follows that the players have opposite preferences. If this were not the case then the problem will be pointless as the players can simply choose the outcome they desire.

  7. Coin rotation paradox - Wikipedia

    en.wikipedia.org/wiki/Coin_rotation_paradox

    The outer coin makes two rotations rolling once around the inner coin. The path of a single point on the edge of the moving coin is a cardioid.. The coin rotation paradox is the counter-intuitive math problem that, when one coin is rolled around the rim of another coin of equal size, the moving coin completes not one but two full rotations after going all the way around the stationary coin ...

  8. Coin manipulation - Wikipedia

    en.wikipedia.org/wiki/Coin_manipulation

    Coin manipulation is the art of manipulating coins in skillful flourishes, usually on or around the hands. [1] Although not always considered coin magic, the flourishes are sometimes used in magic shows. The difficulty of the trick ranges greatly, from some that take a few minutes to accomplish, to much more complex ones that can take months ...

  9. Matching pennies - Wikipedia

    en.wikipedia.org/wiki/Matching_pennies

    If one penny is heads and the other tails, Odd wins and keeps both coins. Matching pennies is a non-cooperative game studied in game theory. It is played between two players, Even and Odd. Each player has a penny and must secretly turn the penny to heads or tails. The players then reveal their choices simultaneously.