GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 20 Jan 2019, 03:19

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar

Five students in a classroom are lining up one behind the other for re

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52295
Five students in a classroom are lining up one behind the other for re  [#permalink]

Show Tags

New post 03 Jan 2019, 03:59
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

93% (00:19) correct 7% (00:01) wrong based on 27 sessions

HideShow timer Statistics

Manager
Manager
User avatar
G
Joined: 15 Jan 2018
Posts: 102
Location: India
Concentration: General Management, Finance
GMAT 1: 720 Q50 V37
WE: Information Technology (Computer Software)
Premium Member Reviews Badge CAT Tests
Re: Five students in a classroom are lining up one behind the other for re  [#permalink]

Show Tags

New post 03 Jan 2019, 05:27
When 5 students in a classroom are lining up one behind the other for recess, they can be arranged in 5! ways, i.e. 120 ways.
Number of ways of arranging n items in a linear way = n!

Hence, the Correct Answer is Option E. 120

_________________

In order to reach the next tier, I need kudos.

Please provide me with kudos in case you like my post. Thank you :)

Manager
Manager
User avatar
G
Joined: 28 Jul 2016
Posts: 208
Location: India
Concentration: Finance, Human Resources
GPA: 3.97
Re: Five students in a classroom are lining up one behind the other for re  [#permalink]

Show Tags

New post 03 Jan 2019, 07:42
since five students are all different
No of ways for 1st position = 5
No of ways for 2nd position = 4
No of ways for 3rd position = 3
No of ways for 4th position = 2
No of ways for 5th position = 1

totatal ways 5*4*3*2*1
=5!
simple permutation or arrangement without repetition= 5!
=120 hence answer E
_________________

Please give Kudos. Kudos encourage active discussions and help the community grow

VP
VP
User avatar
G
Joined: 18 Aug 2017
Posts: 1253
Location: India
Concentration: Sustainability, Marketing
WE: Marketing (Energy and Utilities)
CAT Tests
Re: Five students in a classroom are lining up one behind the other for re  [#permalink]

Show Tags

New post 06 Jan 2019, 04:35
Bunuel wrote:
Five students in a classroom are lining up one behind the other for recess. How many different lines are possible?

(A) 5
(B) 10
(C) 24
(D) 25
(E) 120



5! ways are possible

5*4*3*2*1 = 120

IMOE
_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.

GMAT Club Bot
Re: Five students in a classroom are lining up one behind the other for re &nbs [#permalink] 06 Jan 2019, 04:35
Display posts from previous: Sort by

Five students in a classroom are lining up one behind the other for re

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.