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- Oct 25th 2008, 04:15 AM #1

- Joined
- Oct 2008
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- 9

## 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.