JEE Main 2026 Mathematics question
A building has ground floor and 10 more floors. Nine persons enter a lift at the ground floor. The lift goes up to the 10th floor. The number of ways, in which any 4 persons exit at a floor and the remaining 5 persons exit at a different floor, if the lift does not stop at the first and the second floors, is equal to:
Answer: (C)
Solution
Available floors are 3 to 10 (8 floors). Choose which 4 persons exit together:
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