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An elevator starts with 5 passengers and stops at 8 different floors if the house. Find out the probability of all the 5 passengers alighting at different floors.

101/512
105/512
107/512
109/512

Correct Answer: 105/512

Explanation:

Required probability = favorable number of cases/ total number of
=⁸P₅ / 8 ⁵ = 105/512

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