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21-10-2022
Mathematics

Answered

that a senior and a junior will be chosen?
Christopher Walken is getting some exercise by randomly walking up and down a flight of stairs. On each step,
there is a 20% chance that he will walk up and an 80% chance that he will walk down. Once he steps on the
landing or the well he will not return to the steps. Use the illustration to answer the questions 2-6.
Random Walks
Christopher Walken
LANDING
up - 20% probability
down-80% probability
landing & well points of no return
WELL
2) What is the probability Christopher Walken reaches the landing in exactly two steps?

Answer :

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