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, 11:10
Customize  |  Hide

Search
Register
New posts
Unanswered

The probability that a visitor at the mall buys a pack of

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Intern
Intern
Joined: 24 Sep 2008
Posts: 21
Followers: 0

Kudos [?]: 5 [0], given: 1

The probability that a visitor at the mall buys a pack of [#permalink] New post 11 Oct 2008, 13:36
The probability that a visitor at the mall buys a pack of candy is 30%. If three visitors come to the mall today, what is the probability that exactly two will buy a pack of candy?

* 0.343
* 0.147
* 0.189
* 0.063
* 0.027

Can someone explain answer for this question and what approach i should follow?
Senior Manager
Senior Manager
User avatar
Joined: 21 Apr 2008
Posts: 275
Location: Motortown
Followers: 0

Kudos [?]: 65 [0], given: 0

GMAT Tests User
Re: m04 - 9 - probablity and [#permalink] New post 11 Oct 2008, 14:16
•P(Buy) = 3/10, P(No Buy) = 7/10
•2 Yes, 1 No = 3/10*3/10*7/10 = 63/1000
•3 Possibilities = YYN + YNY + NYY = 3(63/1000) = 189/1000 = .189%

Already discussed in this thread 7-t55689
Re: m04 - 9 - probablity and   [#permalink] 11 Oct 2008, 14:16
    Similar topics Author Replies Last post
Similar
Topics:
 Popular new posts 7 Experts publish their posts in the topic The probability that a visitor at the mall buys a pack of bmwhype2 20 13 Nov 2007, 09:20
Popular new posts 7 Experts publish their posts in the topic The probability that a visitor at the mall buys a pack of yuefei 17 16 Nov 2007, 09:27
New posts The probability that a visitor at the mall buys a pack of Amit05 1 24 Nov 2007, 08:45
New posts 3 The probability that a visitor at the mall buys a pack of stingraybullray 4 14 Jun 2008, 09:18
Popular new posts 20 Experts publish their posts in the topic The probability that a visitor at the mall buys a pack of study 14 20 Oct 2009, 06:44
Display posts from previous: Sort by

The probability that a visitor at the mall buys a pack of

  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