GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 19 Oct 2019, 07:59

### 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

# Is -1<x<0?

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

### Hide Tags

Director
Joined: 18 Feb 2019
Posts: 581
Location: India
GMAT 1: 460 Q42 V13
GPA: 3.6
Is -1<x<0?  [#permalink]

### Show Tags

02 Mar 2019, 09:56
00:00

Difficulty:

65% (hard)

Question Stats:

46% (01:51) correct 54% (01:28) wrong based on 39 sessions

### HideShow timer Statistics

Is -1<x<0?

I. x^3 >-1
II. x^2-1<0
NUS School Moderator
Joined: 18 Jul 2018
Posts: 1020
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Re: Is -1<x<0?  [#permalink]

### Show Tags

02 Mar 2019, 19:26
1
From statement 1:

x^3 > -1.
Means x > -1.
But no info whether x is less than 0.
Hence Insufficient.

From statement 2:

x^-1<0
Or -1<x<1.
Again x >-1. But no info whether x is less than 0.
Hence Insufficient.

Combining both also gives no extra info.
Hence E is the answer
_________________
Press +1 Kudos If my post helps!
Director
Joined: 18 Feb 2019
Posts: 581
Location: India
GMAT 1: 460 Q42 V13
GPA: 3.6
Re: Is -1<x<0?  [#permalink]

### Show Tags

02 Mar 2019, 20:25
Afc0892 wrote:
From statement 1:

x^3 > -1.
Means x > -1.
But no info whether x is less than 0.
Hence Insufficient.

From statement 2:

x^-1<0
Or -1<x<1.
Again x >-1. But no info whether x is less than 0.
Hence Insufficient.

Combining both also gives no extra info.
Hence E is the answer

Hi,
Thanks for the explanation. I am in a little confusion in Statment 2. Can you please explain Statment 2 more elaborately
Intern
Joined: 12 Apr 2018
Posts: 13
Is -1 [#permalink]

### Show Tags

02 Mar 2019, 20:36
1
x^2-1<0
(x+1)(x-1)<0
-1<x<1

Now this gives range for x which is higher than the given in the question, so we cannot say it this statement is sufficient. Hence insufficient.

Sent from my iPhone using GMAT Club Forum
Senior Manager
Joined: 25 Feb 2019
Posts: 336
Re: Is -1<x<0?  [#permalink]

### Show Tags

02 Mar 2019, 21:10
kiran120680 wrote:
Afc0892 wrote:
From statement 1:

x^3 > -1.
Means x > -1.
But no info whether x is less than 0.
Hence Insufficient.

From statement 2:

x^-1<0
Or -1<x<1.
Again x >-1. But no info whether x is less than 0.
Hence Insufficient.

Combining both also gives no extra info.
Hence E is the answer

Hi,
Thanks for the explanation. I am in a little confusion in Statment 2. Can you please explain Statment 2 more elaborately

We have a formula for thia inequality

x^2 - a^2 <0

IT MEANS -a<x<a

this formula is used in second statement

Posted from my mobile device
Re: Is -1<x<0?   [#permalink] 02 Mar 2019, 21:10
Display posts from previous: Sort by

# Is -1<x<0?

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

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne