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516概率简单数值题short

Absorption in a Three-State Chain with Two Traps

题目

A Markov chain has three states: AA, BB, and CC. States AA and BB are absorbing. From state CC, the chain moves to AA with probability 1/51/5, to BB with probability 1/51/5, and stays at CC with probability 3/53/5. Starting from CC, what is the probability of being absorbed at AA? What is the expected number of steps until absorption?

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