Wednesday, September 13, 2006

The train Problem[R]

You and your friend are in two adjacent boggies of a train with infinite number of boggies.Both of you donot know in which boggie the other person is.Both of you move towards front or back boggie with the intention of meeting the other.A move consists of a person moving from one boggie to other and assume that both make moves simultaneously.What is the average(expected) number of moves after which both of you meet ?[reviewing the solution...]