Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 06 Jul 2015, 12:34

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Find the number of ways in which 5 boys and 5 girls may be

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Director
Joined: 03 Jul 2003
Posts: 654
Followers: 2

Kudos [?]: 32 [0], given: 0

Find the number of ways in which 5 boys and 5 girls may be [#permalink]  06 Jan 2004, 15:04
Find the number of ways in which 5 boys and 5 girls may be seated in a row so that no two girls are together.
Director
Joined: 14 Oct 2003
Posts: 588
Location: On Vacation at My Crawford, Texas Ranch
Followers: 1

Kudos [?]: 10 [0], given: 0

Re: Comb - boys and girls [#permalink]  06 Jan 2004, 15:32
kpadma wrote:
Find the number of ways in which 5 boys and 5 girls may be seated in a row so that no two girls are together.

could be

G B G B G B G B G B

or

B G B G B G B G B G

thus (5! x 5!)x2 = 28,880
Director
Joined: 03 Jul 2003
Posts: 654
Followers: 2

Kudos [?]: 32 [0], given: 0

[#permalink]  06 Jan 2004, 16:25
Ans: 28800 is correct!
GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4309
Followers: 29

Kudos [?]: 235 [0], given: 0

[#permalink]  06 Jan 2004, 16:46
Yup, forgot the possibility that it could interchangeably start by a boy or a girl
_________________

Best Regards,

Paul

Director
Joined: 03 Jul 2003
Posts: 654
Followers: 2

Kudos [?]: 32 [0], given: 0

[#permalink]  09 Jan 2004, 13:26
Sorry folks!
This answer is correct if "Find the number of ways in which 5 boys and 5 girls can be seated alternately in a row?"
kpadma wrote:
Ans: 28800 is correct!

The correct answer for the posted question is 86400.

[#permalink] 09 Jan 2004, 13:26
Similar topics Replies Last post
Similar
Topics:
6 An easy way to find squares of numbers !! 6 16 Sep 2013, 11:33
1 Find the number of ways in which you can paint a cube formed 4 25 Sep 2008, 08:24
Six boys and six girls sit in a row at random.Find the 2 22 Dec 2007, 21:04
A dancing class consists of 5 boys and 4 girls. How many 4 14 Dec 2007, 19:23
Find the number of ways in which 5 men and 4 women can be 7 26 May 2006, 04:43
Display posts from previous: Sort by

Find the number of ways in which 5 boys and 5 girls may be

 Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO 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®.