Class 11MathematicsPermutations and CombinationsDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyIf a man and his wife enter a bus in which five seats are vacant,then the number of different ways in which they can be seated is
- A$2$
- B$5$
- C$20$
- D$40$
Explore More
Similar Questions
$A$ three-digit number $n$ is such that the last two digits are equal and differ from the first digit. The number of such $n$'s is:
In how many ways can $9$ examination papers be arranged so that the best and the worst papers are never together?
If $^mP_r - ^{m-1}P_r = a \cdot ^{m-1}P_s$,then $a - s = \dots$
The number of ways in which $6$ distinct rings can be worn on the $4$ fingers of one hand is
Easy
View SolutionThe number of integers greater than $6000$ that can be formed by using the digits $0, 5, 6, 7, 8,$ and $9$ without repetition is
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo