Question: 2. Consider a random walk on the discrete line in which the particle's initial position is 0, and the position increases by 1 in a

2. Consider a random walk on the discrete line in which

2. Consider a random walk on the discrete line in which the particle's initial position is 0, and the position increases by 1 in a step with the probability p and decreases by 1 in a step with the probability q- 1- p, independently over different time steps, where Given an integer >0, what is the probability that the particle ever visits the point of coordinate r

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