Q. 16

Mark the correct alternative in each of the following:

Five persons entered the lift cabin on the ground floor of an 8 floor house. Suppose that each of them independently and with equal probability can leave the cabin at any floor beginning with the first, then the probability of all 5 persons leaving at different floors is

A. B.

C. D.

Answer :

P(all 5 persons leaving at diff. floors)=

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