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  2. 24 (puzzle) - Wikipedia

    en.wikipedia.org/wiki/24_(puzzle)

    The original version of 24 is played with an ordinary deck of playing cards with all the face cards removed. The aces are taken to have the value 1 and the basic game proceeds by having 4 cards dealt and the first player that can achieve the number 24 exactly using only allowed operations (addition, subtraction, multiplication, division, and parentheses) wins the hand.

  3. Taxman (mathematical game) - Wikipedia

    en.wikipedia.org/wiki/Taxman_(mathematical_game)

    The game is played between two players on a board consisting of whole numbered tokens labeled 1 through N, where N is any positive whole number. During each turn, one player (deemed the tax payer) takes a number from the board, and the other player (deemed the taxman) removes all remaining factors of the tax payer's number from the board.

  4. Contract bridge probabilities - Wikipedia

    en.wikipedia.org/wiki/Contract_bridge_probabilities

    Hence, the number of suit permutations of the 4-4-3-2 pattern is twelve. Or, stated differently, in total there are twelve ways a 4-4-3-2 pattern can be mapped onto the four suits. Or, stated differently, in total there are twelve ways a 4-4-3-2 pattern can be mapped onto the four suits.

  5. Rummikub - Wikipedia

    en.wikipedia.org/wiki/Rummikub

    Rummikub (/ ˈ r ʌ m i k j uː b /, "rummy cube" [1]) is a tile-based game for 2 to 4 players, combining elements of the card game rummy and mahjong. There are 106 tiles in the game, including 104 numbered tiles (valued 1 to 13 in four different colors, two copies of each) and two jokers.

  6. Bulls and cows - Wikipedia

    en.wikipedia.org/wiki/Bulls_and_Cows

    Answer: 1 bull and 2 cows. (The bull is "2", the cows are "4" and "1".) The first player to reveal the other's secret number wins the game. The game may also be played by two teams of players, with the team members discussing their strategy before selecting a move. Computer versions of the game started appearing on mainframes in the 1970s.

  7. Krypto (game) - Wikipedia

    en.wikipedia.org/wiki/Krypto_(game)

    A spread of Krypto cards: players must find a way to calculate 12 using the numbers 5, 19, 8, 3 and 6. Krypto is a card game designed by Daniel Yovich in 1963 and published by Parker Brothers and MPH Games Co. [1] It is a mathematical game that promotes proficiency with basic arithmetic operations.

  8. Lottery wheeling - Wikipedia

    en.wikipedia.org/wiki/Lottery_wheeling

    A key number wheel (or power number wheel) is a wheel in which one or more numbers (called key numbers or power numbers) appear in every combination of the wheel. Example: Pick 5, 7 numbers wheel, with 2 key numbers (1 and 2), 2 if 2 and 3 if 4 for the full set and 4 if 5 for the filtered set:

  9. Percentage play - Wikipedia

    en.wikipedia.org/wiki/Percentage_play

    Percentage play in contract bridge is a play influenced by mathematical factors when more than one reasonable line of play is available. [1] It is a generic name for plays in which declarer maximizes the chances for obtaining a certain number of tricks or the maximum number of tricks when considering the suit in isolation.