|
|
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.
05 Dec 2018, 04:55
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:
42% (02:04) correct
58%
(01:45)
wrong
based on 138
sessions
History
Date
Time
Result
Not Attempted Yet
What is the value of y, if both x and y are integers and xy<0?
(1) \(\frac{2^x}{2^y}=4\)
(2) \(x+y=0\)
(1) \(\frac{2^x}{2^y}=4\)
(2) \(x+y=0\)
Chetan's questions
tricky
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
honneeey
Joined: 23 Aug 2016
Last visit: 06 Apr 2022
Posts: 90
Own Kudos:
Given Kudos: 818
Location: India
Concentration: Finance, Strategy
Schools: Booth '18 Kellogg '18 HBS '18 Stanford '18 ISB '20
GMAT 1: 660 Q49 V31
GPA: 2.84
WE:Other (Energy)
Products:
Schools: Booth '18 Kellogg '18 HBS '18 Stanford '18 ISB '20
GMAT 1: 660 Q49 V31
Posts: 90
Kudos:
179
05 Dec 2018, 05:02
Kudos
Bookmarks
A.
1. Says that x-y=2
As we know both x and y are integers and one is positive and one is negative i.e none of them is zero, we can safety find value of x and y which satisfies the equation x-y=2
There is only one set of points that are at a distance of 2 units of each other and have different signs i.e. 1 and -1.
Sufficient.
2. Not sufficient. X and y can be (2,-2),(3,-3) etc.
Posted from my mobile device
1. Says that x-y=2
As we know both x and y are integers and one is positive and one is negative i.e none of them is zero, we can safety find value of x and y which satisfies the equation x-y=2
There is only one set of points that are at a distance of 2 units of each other and have different signs i.e. 1 and -1.
Sufficient.
2. Not sufficient. X and y can be (2,-2),(3,-3) etc.
Posted from my mobile device
05 Dec 2018, 05:26
Kudos
Bookmarks
Took me 7:30min to get A.... Had to realize from Statement 1, you get x-y=2 and the only way for XY to be negative is for Y to be negative. The only values that work to satisfy this conditions are 1 and -1 respectively for X and Y. Any tips on how to realize this much faster? I knew 2 was insufficient but on the actual exam, a question like this would destroy my timing as I would never spend more than 3/3:30 tops for a single question.
