Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
04 Mar 2021, 03:00
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
59% (01:31) correct
41%
(01:33)
wrong
based on 118
sessions
History
Date
Time
Result
Not Attempted Yet
n people, where n > 3, are to be seated at a round table. How many different arrangements are there if Ann, Bob and Cathy want to sit next to each other ? (2 seating arrangements are considered different only when the positions of the people are different relative to each other.)
A. \(3!(n-1)!\)
B. \(3!(n-2)!\)
C. \(3!(n-3)!\)
D. \((n-2)!\)
E. \((n-3)!\)
A. \(3!(n-1)!\)
B. \(3!(n-2)!\)
C. \(3!(n-3)!\)
D. \((n-2)!\)
E. \((n-3)!\)
04 Mar 2021, 03:54
Kudos
Bookmarks
Number of arrangements of seating n people in a circle = (n - 1)!
Let ABC be taken as 1 unit. We now have to seat (n - 3) people + 1 unit of 3 people.
External arrangements = [(n - 3) + 1 - 1]! = (n - 3)!
Internal Arrangements (ABC) = 3!
Total number of arrangements = 3! * (n -3)!
Option C
Arun Kumar
Let ABC be taken as 1 unit. We now have to seat (n - 3) people + 1 unit of 3 people.
External arrangements = [(n - 3) + 1 - 1]! = (n - 3)!
Internal Arrangements (ABC) = 3!
Total number of arrangements = 3! * (n -3)!
Option C
Arun Kumar
15 Jan 2025, 20:32
Kudos
Bookmarks
Automated notice from GMAT Club BumpBot:
A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.
This post was generated automatically.
A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.
This post was generated automatically.
