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Math Help - Probability and independence

  1. #1
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    Probability and independence

    Let Q_n denote the probability that in n toss no heads comes up 3 times in a row. How do we show the probability of this happening?
    Last edited by Scopur; October 16th 2008 at 12:06 PM.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by Scopur View Post
    Let Q_n denote the probability that in n toss
    and the question is..

    CB
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  3. #3
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    Anyone ?
    Q_0 =  Q_1 = Q_2 = 0
    Q_3 = 7/8  because the only possible outcome of 3 heads is  \{ H H H \} Then i dont know how to do for Q_4

    logically i thought it would be  14/16 = 7/8 But what am i missing? i thought the only possibilities would be  \{ THHH, HHHT \}
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