Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2510:00 AM EST
-11:00 AM EST
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
Updated on: 09 May 2021, 03:43
Originally posted by rishabhmishra on 27 Mar 2018, 22:16.
Last edited by Bunuel on 09 May 2021, 03:43, edited 2 times in total.
Last edited by Bunuel on 09 May 2021, 03:43, edited 2 times in total.
Flawed question
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
14% (02:21) correct
86%
(02:17)
wrong
based on 14
sessions
History
Date
Time
Result
Not Attempted Yet
p, q, r, and s are integers such that p > q > r. what is the value of (r + s)?
(1) \(x^4-x^2=(x-p)(x-q)(x-r)(x-s)\)
(2) s < q
Source :-expertsglobal
EDIT:- A correct DS question will NOT give two different answers through the two statements..
(1) \(x^4-x^2=(x-p)(x-q)(x-r)(x-s)\)
(2) s < q
Source :-expertsglobal
EDIT:- A correct DS question will NOT give two different answers through the two statements..
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
27 Mar 2018, 22:59
Kudos
Bookmarks
rishabhmishra
Statement 1:
Lets break down the left hand side into its factors, and then compare it with right hand side.
x^4 - x^2 = x^2 (x^2 - 1) = x^2 (x-1) (x+1). This can further be written as:
x*x*(x-1)*(x+1) = (x-0)*(x-0)*(x-1)*(x-(-1)) (I have written x+1 as x-(-1) so that I can easily compare it to right hand side)
So we have: (x-0)*(x-0)*(x-1)*(x-(-1)) = (x-p)(x-q)(x-r)(x-s)
Thus comparing the two sides, we can say that p, q, r, s will take the values of 0, 0, 1 and -1 in some order. And two of them will take the same value of '0'.
We are already given that p > q > r. This means p=1, q=0 and r=-1; that's the only possibility here. This leaves s=0.
So we can calculate r+s = -1+0 = -1.
Sufficient.
Statement 2:
s < q. Clearly this is not sufficient.
Hence A answer.
16 Apr 2018, 23:06
Kudos
Bookmarks
amanvermagmat, Bunuel, chetan2u
In this question, statement 1 says s=q.
While as per statement 2, s<q.
Is it possible to statement contradict each other in GMAT?
Please provide insights on the quality of question.
In this question, statement 1 says s=q.
While as per statement 2, s<q.
Is it possible to statement contradict each other in GMAT?
Please provide insights on the quality of question.
amanvermagmat
