Question 1174815
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A sample space is the list of all possible outcomes with the probability for each outcome.


In this problem,  the list of all possible outcomes is the list of all possible floors where the elevator can stop.



So, you easily can write this list on your own - my help is not needed for it.



But I can not provide a probability to every element of the list.

because the problem's description does not provide this data.



Again,  the diagnosis is: the problem description is  INCOMPLETE  to give the full answer.



It is the  FATAL  DEFICIENCY  of the posted problem.



Simply saying,  the author / (the composer),  who created this "problem",  has no enough qualification
to make the job properly.