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Math Help - probability

  1. #1
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    probability

    4. a) A single fair die is rolled. Find the probability of getting an odd number.
    b) A card is drawn from a well-shuffled deck of 52 cards. Find the probability that the card is either a 10 or a diamond.
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  2. #2
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    Quote Originally Posted by bobby77 View Post
    4. a) A single fair die is rolled. Find the probability of getting an odd number.
    All faces of the die are equally likely. The favourable outcomes in this case are:

    1, 3, 5

    out of a total of 6 possible outcomes. Therefore the probability of an odd
    number when the die is rolled is:

    [number of favourable outcomes]/[total number of outcomes] = 3/6 = 0.5

    b) A card is drawn from a well-shuffled deck of 52 cards. Find the probability that the card is either a 10 or a diamond.
    Here the favourable outcomes are A , 2 , 3 .., 10, J, Q, K of diamonds and
    10 of hearts, 10 of Spades, 10 of clubs which is a total of 16 favourable cases.

    Total number of outcomes = 52, so the required probability is: 16/52=4/13

    RonL
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