Question:medium
Three persons enter a lift at the ground floor. The lift will go up to the 10th floor.
The number of ways in which the three persons can exit the lift at three different floors,
if the lift does not stop at the 1st, 2nd and 3rd floors, is equal to _______.
Three persons enter a lift at the ground floor. The lift will go up to the 10th floor.
The number of ways in which the three persons can exit the lift at three different floors,
if the lift does not stop at the 1st, 2nd and 3rd floors, is equal to _______.
Show Hint
In problems involving people exiting at different floors, always multiply combinations of floors by permutations of people.
Updated On: Feb 24, 2026
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Correct Answer: 210
Solution and Explanation
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