You wake up in an empty room with three doors labeled A, B, and C. There is a paper note saying that all doors will eventually lead to the exiting

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You wake up in an empty room with three doors labeled A, B,and C. There is a paper note saying that all doors will eventuallylead to the exiting hallway. Some doors will have more doorsbehind them. Each door has a probability p of being unlocked.independent of the state of other doors. a) There is exactly one extra door behind door A and no doors behind doors B and C. What's the probability ofreaching the exit?