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    ama_ort's Avatar
    ama_ort Posts: 1, Reputation: 1
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    #1

    May 16, 2007, 06:36 PM
    you first have 52. Well they take 2 out. Which equals to 50. So does that mean you have to dvide.

    a card is selected at a random from a standard deck of 52 cards. Than a second card is selected without replacing the first card.

    find the probabilitiy of selecting two red cards.

    please help me
    Emland's Avatar
    Emland Posts: 2,468, Reputation: 496
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    #2

    May 16, 2007, 06:46 PM
    Where do you think you should start?
    Are all the cards the same color?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #3

    May 16, 2007, 10:28 PM
    well the probability of selecting the first red card is 26/52,
    and the probability of selecting the second red card is 25/51.

    What's the probability of doing both?
    colbtech's Avatar
    colbtech Posts: 748, Reputation: 66
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    #4

    May 17, 2007, 08:34 AM
    For the first draw, as there are 26 cards of each colour in the pack then the probability is 26/52 or 0.5. I'll leave you to work out the second...
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