JEE Main & Advanced
Mathematics
Permutations and Combinations
Question Bank
Definition of permutation, Number of permutations with or without repetition, Conditional permutations
question_answer
In a train five seats are vacant, then how many ways can three passengers sit [RPET 1985; MP PET 2003]
A)20
B)30
C)10
D)60
Correct Answer:
D
Solution :
Required number of ways\[={{\,}^{5}}{{P}_{3}}=60\].