Five persons enter a lift cabin on the ground floor of an eight-floor house
MATHEMATICS · Single correct · CBSE · Mathematics · Permutations and Combinations · Permutations and Combinations
Problem
Five persons enter a lift cabin on the ground floor of an eight-floor house. Each person can leave independently at any floor beginning with the first floor. The total number of ways in which the five persons can leave the cabin is:
(1) 57
(2) 75
(3) 35
(4) 2520