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Thread: help please

  1. #1
    Oct 2008

    Exclamation help please

    There are two stations from A to B and two stations from B to C. Suppose that each station is closed with probability p and that the state of each station is independent of the others. What condition on p ensures that the probability that I cannot travel from A to C on train is no more than 1/2?

    Can some please guide me on doing this probability problem.
    Last edited by maths2008; October 25th 2008 at 06:25 AM.
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