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

It is currently 25 Oct 2014, 14:22

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The probability for event A to occur is 0.6, and for B to

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 23 Dec 2005
Posts: 18
Followers: 0

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

The probability for event A to occur is 0.6, and for B to [#permalink] New post 24 Apr 2006, 02:29
The probability for event A to occur is 0.6, and for B to occur is 0.5. What is the probability that neither event A nor event B will occur?
Director
Director
User avatar
Joined: 08 Jun 2004
Posts: 502
Location: Europe
Followers: 1

Kudos [?]: 12 [0], given: 0

 [#permalink] New post 24 Apr 2006, 02:45
9/10

(1-6/10)+(1-5/10)=9/10.
Senior Manager
Senior Manager
avatar
Joined: 09 Mar 2006
Posts: 445
Followers: 1

Kudos [?]: 6 [0], given: 0

 [#permalink] New post 24 Apr 2006, 02:57
(1-6/10)*(1-5/10) = 20/100 = 1/5 = 0.2
Intern
Intern
avatar
Joined: 28 Nov 2005
Posts: 35
Followers: 0

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

 [#permalink] New post 24 Apr 2006, 04:26
If we assume that A and B are independant, then we have:
P(N)=1-[P(A)+P(B)-P(AnB)]
=1-[6/10+5/10 - 6/10*5/10]
=1-[11/10- 3/10]
=1-[8/10]
=2/10
=0.2

Is that correct?
(N=Neither A, nor B)
Intern
Intern
avatar
Joined: 23 Dec 2005
Posts: 18
Followers: 0

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

 [#permalink] New post 24 Apr 2006, 07:02
OA is 0.2

Thanks guys!
Director
Director
User avatar
Joined: 08 Jun 2004
Posts: 502
Location: Europe
Followers: 1

Kudos [?]: 12 [0], given: 0

 [#permalink] New post 24 Apr 2006, 10:26
Ethan wrote:
OA is 0.2

Thanks guys!


OOOPPPSSS

It should be multiplied not added. :oops:
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5095
Location: Singapore
Followers: 19

Kudos [?]: 155 [0], given: 0

 [#permalink] New post 24 Apr 2006, 23:47
Alternatively,

P(!A) = 0.4
P(!B) = 0.5

P(!A AND !B) = 0.4 * 0.5 = 0.2
  [#permalink] 24 Apr 2006, 23:47
    Similar topics Author Replies Last post
Similar
Topics:
4 What is the probability that events A and B both occur? If singaks 7 05 Mar 2008, 21:15
Probability of event A is 0.5, of B is 0.6 and of C is 0.9. illusion 2 20 Sep 2007, 23:31
What is the probability that events A and B both occur? (1) ffgmat 9 24 Aug 2006, 22:08
The probability that event A occurs is 0.5, event B occurs vivek123 4 01 Apr 2006, 22:37
Another simple one The probability that event A occurs TeHCM 7 04 Feb 2006, 22:33
Display posts from previous: Sort by

The probability for event A to occur is 0.6, and for B to

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.