Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
61 views
in Mathematics by (237k points)
closed by
In how many ways can we arrange ‘n’ things in a row?
1. (n+1)!
2. (n‐1)!
3. 2n!
4. n!

1 Answer

0 votes
by (239k points)
selected by
 
Best answer
Correct Answer - Option 4 : n!

Given 

In how many ways can we arrange 'n' things in a row 

Calculation :

Number of ways of arrange n things(If n = 5!)

⇒ 5× 4 × 3 × 2× 1 = 120 ways to arrange fine objects . 

In general say that there are n! permutations of n objects . This quantity nCis called the "combination" and represents the probability of picking r distinguishable outcomes out of n without regard to the order of picking each outcome.

∴ The required answer is n!.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...