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probability of going down

radosr

radosr

Baruch MFE Faculty
Joined
7/18/07
Messages
663
Points
73
Alice is waiting for the elevator on the ath floor in a building and wishes to go down. The building has b > a floors. Assume the elevator is continually going up and down all day long. Calculate the probability that when the elevator arrives, it will be going down.
CHALLENGE: Same question for n elevators?
 
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