Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 19 Jun 2013, 16:07
Customize  |  Hide

Search
Register
New posts
Unanswered

A certain consulting firm employs 8 men and 4 women. In

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
SVP
SVP
User avatar
Joined: 16 Oct 2003
Posts: 1957
Followers: 2

Kudos [?]: 15 [0], given: 0

GMAT Tests User
A certain consulting firm employs 8 men and 4 women. In [#permalink] New post 11 Dec 2005, 20:08
18. A certain consulting firm employs 8 men and 4 women. In March, 3 employees are selected at random to represent the company at a convention, what is the probability that the representatives will NOT all be men?
(A)14/55
(B)3/8
(C)41/55
(D)2/3
(E)54/55

Last edited by Bhai on 12 Dec 2005, 08:01, edited 1 time in total.
Director
Director
User avatar
Joined: 10 Oct 2005
Posts: 732
Location: Madrid
Followers: 3

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

GMAT Tests User
Re: Men Women [#permalink] New post 11 Dec 2005, 20:35
Bhai wrote:
18. A certain consulting firm employs 8 men and 4 women. In March, 3 employees are selected at random to represent the company at a convention, what is the probability that the representatives will NOT all be men?
(A)55/14
(B)8/3
(C)55/41
(D)3/2
(E)55/54
May be I am getting something wrong but how come the prob can be >1 ?
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5134
Location: Singapore
Followers: 9

Kudos [?]: 89 [0], given: 0

GMAT Tests User
 [#permalink] New post 11 Dec 2005, 20:37
12C3 = 220
8C3 = 56

P(all men) = 56/220=14/55
P(! all men) = 1-14/55 = 41/55
Director
Director
User avatar
Joined: 10 Oct 2005
Posts: 732
Location: Madrid
Followers: 3

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

GMAT Tests User
 [#permalink] New post 11 Dec 2005, 20:40
ywilfred wrote:
12C3 = 220
8C3 = 56

P(all men) = 56/220=14/55
P(! all men) = 1-14/55 = 41/55

Agree same reasoning But the answer choices?May be a typo?
SVP
SVP
User avatar
Joined: 16 Oct 2003
Posts: 1957
Followers: 2

Kudos [?]: 15 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Dec 2005, 08:02
This one is also edited.
Current Student
User avatar
Joined: 29 Jan 2005
Posts: 5289
Followers: 17

Kudos [?]: 91 [0], given: 0

GMAT Tests User Reviews Badge
 [#permalink] New post 12 Dec 2005, 08:20
(C) looks like the more attractive Lucky Twin.
Senior Manager
Senior Manager
Joined: 11 May 2004
Posts: 462
Location: New York
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Dec 2005, 15:18
I wasn't sure how to do this, so i tried this little trick:

Look for the two answer choices that add up to and pick the one that the qn refers to. If all were men, it is the lesser probability, if all weren't men, pick the larger.

Chose 41/55 with this strategy.
Senior Manager
Senior Manager
User avatar
Joined: 05 Jan 2005
Posts: 254
Followers: 1

Kudos [?]: 3 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Dec 2005, 15:37
Hi Folks ,

I got C by

1- (8/12*7/11*6/10) = (1-14/55) = 41/55

Can someone please clear one doubt I have on this.

Why isnt Binomial Distrubution Applicable here. I tried to get the same result using p=2/3 and applying Binomial Distribution but did not get the ans.

Whats wrong with that approach ?

thanks
  [#permalink] 12 Dec 2005, 15:37
    Similar topics Author Replies Last post
Similar
Topics:
 New posts Company Y employs C women and D men. Do the women at company jaynayak 1 18 Jun 2006, 03:42
New posts A small company employs 3 men and 5 women. If a team of 4 gkslko101 3 11 Aug 2007, 05:04
Popular new posts 6 Experts publish their posts in the topic A small company employs 3 men and 5 women. If a team of 4 alimad 14 22 Nov 2007, 19:46
New posts A small company employs 3 men and 5 women. If a team of 4 nirimblf 2 15 Jul 2008, 10:08
Popular new posts A small company employs 3 men and 5 women. If a team of 4 amitdgr 12 17 Sep 2008, 07:30
Display posts from previous: Sort by

A certain consulting firm employs 8 men and 4 women. In

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: VeritasPrepKarishma, Bunuel

Search for:


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

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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com