A game is played by choosing 2 cards randomly from a deck of cards.

  1. profile image49
    cartee33posted 15 years ago

    A game is played by choosing 2 cards randomly from a deck of cards.

    Everytime you choose 2 cards that are face cards or 2 cards that are consecutive (i.e. 4 and 5, Jack and Queen), you win the game. If you recieve $2.00 everytime you win the game, determine the expected amount of winnings after 100 games.

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  2. t.elia profile image67
    t.eliaposted 15 years ago

    I am going to work this out assuming that Im working with the following; King, Queen, Jack, 10, 9, 8, 7, 6, 5, 4, 3, 2, and Ace

    Thats 13 cards per suit;  Diamonds, Spades, Clubs and Hearts
    a total of 52 cards

    First lets calculate the probability of drawing two consecutive cards from one suite;

    you win only if the two cards are consecutive;

    = 13(c2)   = 13 x 12 / 2 = 78

    so ...no of ways this can happen is ( n -1 ) = 13- 1 = 12

    probability for win = 12 /78 per suit

    For 100  games number of wins;

    =  100 x 12 / 78 = $15.38 x 2$ per win = $30.76

    to get the probability of the deck divide by 4

    $30.76 / 4 = $7.69


    Hope this helps

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