Question

A rat is performing a random walk along the number line as follows. His original position is x

= 0. He takes a step forward or a step backward with equal probability. For example, if he is

at x = 1, he can go to x = 2 or x = 0 with equal probability.

His home is at x = 3, while there is a trap at x = –2. What is the probability that he’ll reach

home before getting trapped?​

Answer 1

Answer:

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