It is currently 15 Sep 2019, 10:04
My Tests

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.

Of the 700 members of a certain organization

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
GRE Prep Club Legend
GRE Prep Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4809
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 132

Kudos [?]: 2076 [1] , given: 397

Of the 700 members of a certain organization [#permalink] New post 14 Dec 2015, 06:24
1
This post received
KUDOS
Expert's post
00:00

Question Stats:

66% (01:12) correct 33% (01:11) wrong based on 24 sessions
Of the 700 members of a certain organization, 120 are lawyers. Two members of the organization will be selected at random. Which of the following is closest to the probability that neither of the members selected will be a lawyer?
A. 0.5
B. 0.6
C. 0.7
D. 0.8
E. 0.9

Practice Questions
Question: 10
Page: 152
Difficulty: medium
[Reveal] Spoiler: OA

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

GRE Prep Club Legend
GRE Prep Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4809
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 132

Kudos [?]: 2076 [0], given: 397

Re: members of a certain organization, 120 are lawyers [#permalink] New post 14 Dec 2015, 06:29
Expert's post
Solution


Here we have an organization of 700 members. Now there are 120 lawyers in the 700 members thus there is 580 not lawyers. Now we have to choose 2 not lawyers.

So the probability becomes \(\frac{580}{700}*\frac{579}{699}\).

Now we can use the calculator available at the GRE to find the value and it is close to 0.7.

Note that the second term is \(\frac{(580-1)}{(700-1)}\) since one not lawyer was already selected in the first attempt.
_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

Re: members of a certain organization, 120 are lawyers   [#permalink] 14 Dec 2015, 06:29
Display posts from previous: Sort by

Of the 700 members of a certain organization

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.