It is currently Fri Jan 18, 2019 9:05 pm

 All times are UTC - 5 hours [ DST ]

 Page 2 of 2 [ 12 posts ] Go to page Previous  1, 2
 Print view Previous topic | Next topic
Author Message
 Post subject: Re: GMAT Algebra (Data Sufficiency)Posted: Sun Apr 28, 2013 4:39 pm

Joined: Sun May 30, 2010 3:15 am
Posts: 424
The reasoning given is correct but one fact that has been missed is that what if the answer is 0. Then (x – 4)(x – 3)(x + 2)(x + 1) = 0 which will deny the question stem. Yes, 0 is positive but that is not asked in the question stem. In the question stem, it is asked whether the equation is "greater than 0" or not. Please tell me if I'm thinking on the right terms or not.

Top

 Post subject: Re: GMAT Algebra (Data Sufficiency)Posted: Sun Apr 28, 2013 4:51 pm

Joined: Sun May 30, 2010 2:23 am
Posts: 498
First of all, note, that 0 is neither a positive nor a negative number.

Quote:
… what if the answer is 0. Then (x – 4)(x – 3)(x + 2)(x + 1) = 0 which will deny the question stem.
Indeed, when x equals 4, 3, -2, or -1, then the whole expression will be 0, which answers the main question with "NO".

When we combine the both statements together none of the above values are possible.

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 2 of 2 [ 12 posts ] Go to page Previous  1, 2

 All times are UTC - 5 hours [ DST ]

#### Who is online

Users browsing this forum: No registered users and 2 guests

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

Search for:
 Jump to:  Select a forum ------------------ GMAT    GMAT: Quantitative Section (Math)    GMAT: Verbal Section    GMAT: Integrated Reasoning    GMAT: General Questions GRE    GRE: Quantitative Reasoning (Math)    GRE: Verbal Reasoning    GRE: General Questions General questions    Other questions