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  1. #1
    Anonymous Guest

    Default Probability Problem

    If I was to toss a coin one million times how many times would I expect the following to occur: -

    5 Straight heads or tails
    6 Straight heads or tails
    7 Straight heads or tails
    8 Straight heads or tails
    9 Straight heads or tails
    10 Straight heads or tails

    Regards

    Roger Bramall
    (EMAIL REMOVED - Send PM to This User Instead)

  2. #2
    Join Date
    Jun 2004
    Posts
    1,370
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    Default

    What about (offhand):
    0.5^x * (10E6 - x + 1)
    ?
    This covers 'ar least' x straight heads.
    If you want exactly x successes, multiply by: 0.5^(10E6 - x)

    FRC

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