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Show that probability that a call can be made from a to b

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Reference no: EM13887239

Villages A , B , C and D are connected by overhead telephone lines joining AB , AC , BC , BD and CD . As a result of severe gales, there is a probability p (the same for each link) that any particular link is broken.

1. Show that the probability that a call can be made from A to B is

          1 - p 2 - 2 p 3 + 3 p 4 - p 5 .

2. Show that the probability that a call can be made from D to A is

        1 - 2 p 2 - 2 p 3 + 5 p 4 - 2 p 5 .

Reference no: EM13887239

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