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

It is currently 25 Jul 2016, 22:36
GMAT Club 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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If we have the below If A -----> ~B ( not B ) which can

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Director
Director
User avatar
Joined: 07 Jun 2004
Posts: 613
Location: PA
Followers: 3

Kudos [?]: 570 [0], given: 22

If we have the below If A -----> ~B ( not B ) which can [#permalink]

Show Tags

New post 22 Mar 2011, 09:04
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

If we have the below

If A -----> ~B ( not B )

which can we infer


~A ------> B

OR

~B ---------> A

can some one explain the contrapositive or negation which is right and valid in GMAT CR
_________________

If the Q jogged your mind do Kudos me : )

Manager
Manager
User avatar
Joined: 10 Nov 2010
Posts: 164
Followers: 5

Kudos [?]: 218 [0], given: 6

Re: Clarification on Syllogism [#permalink]

Show Tags

New post 22 Mar 2011, 09:31
In my opinion

B-------->~A
Director
Director
avatar
Status: Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Joined: 03 Feb 2011
Posts: 920
Followers: 13

Kudos [?]: 307 [0], given: 123

Reviews Badge
Re: Clarification on Syllogism [#permalink]

Show Tags

New post 22 Mar 2011, 10:20
'When A is true, B is true' - original

'converse' says 'when B is true, A is true'.

Contra positive is 'when B is not true, A is not true'.

I tried using this approach didn't work for me especially when it comes to super hard questions. You have to dissect the fluff immediately to see the skyline. Too formalistic approach being "algebraic" pays off after a lot of hard work. The other way is using critical reasoning in day to day life. Just use CR in any damn conversation - what is the assumption my friend made? What is the "must" be true in my friend's argument? What will I say to completely destroy the argument / to strengthen the argument? Is my friend making a realistic assumption. And so on ;-) Hope that helps.
Re: Clarification on Syllogism   [#permalink] 22 Mar 2011, 10:20
    Similar topics Author Replies Last post
Similar
Topics:
Given that all A's are B's, which of the following adineo 1 05 Sep 2012, 04:10
1 Test B #10 In many surveys, American consumers have topher 15 20 Jul 2009, 21:38
I think we can have great discussions about this one: karlfurt 18 21 Nov 2006, 10:38
Which of the following best completes the passage below? The gmatcrook 6 16 Aug 2006, 13:05
Which of the following best completes the passage below? As sperinko 11 06 Aug 2006, 08:46
Display posts from previous: Sort by

If we have the below If A -----> ~B ( not B ) which can

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| 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®.