Summer is Coming! Join the Game of Timers Competition to Win Epic Prizes. Registration is Open. Game starts Mon July 1st.

It is currently 18 Jul 2019, 00:02

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

A pod of 6 dolphins always swims single file, with 3 females

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

Hide Tags

Find Similar Topics 
Manager
Manager
User avatar
Joined: 03 May 2014
Posts: 52
Concentration: Operations, Marketing
GMAT 1: 680 Q48 V34
GMAT 2: 700 Q49 V35
GPA: 3.6
WE: Engineering (Energy and Utilities)
GMAT ToolKit User
A pod of 6 dolphins always swims single file, with 3 females  [#permalink]

Show Tags

New post Updated on: 24 Aug 2014, 05:53
1
5
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

78% (00:48) correct 22% (00:56) wrong based on 275 sessions

HideShow timer Statistics


A pod of 6 dolphins always swims single file, with 3 females at the front and 3 males in the rear. In how many different arrangements can the dolphins swim?

A. 20
B. 36
C. 40
D. 18
E. 54

Originally posted by sahil7389 on 24 Aug 2014, 03:17.
Last edited by Bunuel on 24 Aug 2014, 05:53, edited 1 time in total.
Renamed the topic and edited the question.
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 56272
Re: A pod of 6 dolphins always swims single file, with 3 females  [#permalink]

Show Tags

New post 24 Aug 2014, 05:58
2
1
sahil7389 wrote:
A pod of 6 dolphins always swims single file, with 3 females at the front and 3 males in the rear. In how many different arrangements can the dolphins swim?

A. 20
B. 36
C. 40
D. 18
E. 54


3 females at the front can be arranged in 3! ways;
3 males at the rear can also be arranged in 3! ways.

To get the total number of arrangements multiply: total = 3!*3! = 36.

Answer: B.
_________________
Intern
Intern
avatar
B
Joined: 30 Apr 2016
Posts: 39
Location: India
Concentration: Entrepreneurship, General Management
Schools: Stern '19 (S)
GMAT 1: 640 Q44 V35
GMAT 2: 700 Q49 V37
GPA: 3.8
Reviews Badge
Re: A pod of 6 dolphins always swims single file, with 3 females  [#permalink]

Show Tags

New post 22 Sep 2016, 05:08
Bunuel wrote:
sahil7389 wrote:
A pod of 6 dolphins always swims single file, with 3 females at the front and 3 males in the rear. In how many different arrangements can the dolphins swim?

A. 20
B. 36
C. 40
D. 18
E. 54


3 females at the front can be arranged in 3! ways;
3 males at the rear can also be arranged in 3! ways.

To get the total number of arrangements multiply: total = 3!*3! = 36.

Answer: B.


Why isn't the 3! x 3! divided by 3! x 3!, given that the dolphins Male and Female are 'repeated'?
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 6923
Location: United States (CA)
Re: A pod of 6 dolphins always swims single file, with 3 females  [#permalink]

Show Tags

New post 12 Nov 2016, 06:32
sahil7389 wrote:
A pod of 6 dolphins always swims single file, with 3 females at the front and 3 males in the rear. In how many different arrangements can the dolphins swim?

A. 20
B. 36
C. 40
D. 18
E. 54


We are given that a pod of 6 dolphins always swims single file, with 3 females at the front and 3 males in the rear. Thus:

The number of ways to arrange the 3 female dolphins in the front is 3! = 3 x 2 x 1 = 6.

The number of ways to arrange the 3 male dolphins is in the rear is 3! = 3 x 2 x 1 = 6.

Thus, the number of ways to arrange all the dolphins is 6 x 6 = 36 ways.

Answer: B
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 11678
Re: A pod of 6 dolphins always swims single file, with 3 females  [#permalink]

Show Tags

New post 27 Dec 2018, 23:03
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Club Bot
Re: A pod of 6 dolphins always swims single file, with 3 females   [#permalink] 27 Dec 2018, 23:03
Display posts from previous: Sort by

A pod of 6 dolphins always swims single file, with 3 females

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





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