Class 11MathematicsPermutation and CombinationDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyEvaluate $4! - 3!$
- A$18$
- B$20$
- C$21$
- D$24$
Explore More
Similar Questions
The number of words,with or without meaning,that can be formed using all the letters of the word $ASSASSINATION$ so that the vowels occur together,is $.............$.
DifficultJEE MAIN 2023
View SolutionFrom a committee of $8$ persons,in how many ways can we choose a chairman and a vice chairman assuming one person cannot hold more than one position?
Easy
View SolutionThe number of ways in which first,second and third prizes can be given to $5$ competitors is
Easy
View SolutionThe number of integers greater than $3000$ that can be formed by using any number of digits from the set $\{0, 1, 2, 3, 4, 5\}$ without repetition is:
The number of $7$ digit numbers which can be formed using the digits $1, 2, 3, 2, 3, 3, 4$ is
Easy
View SolutionVedclass 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