Suppose a particle moves along the x-axis beginning at x= 1. It moves one integer step to
the left with probability 1/2, or one integer step to the right with probability 1/2
: If the particle ever arrives at x = O, it is absorbed there (takes no further steps)
What is the probability that the particle will be absorbed eventually at x= 0?
Now assume that the particle beqins at X = 7. What is the probability that the particle will be
absorbed eventually at x= 0?
Solution:
