It is currently 23 Feb 2018, 12:42

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# mgmat QUES ??

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 21 Mar 2006
Posts: 131
mgmat QUES ?? [#permalink]

### Show Tags

26 Jul 2008, 00:44
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is x > y?

(1) SQRT(X)> y

(2) x^3 > y

How to solve it ? There is explaination on mgmat , but I cannot understand.

Thanks,
Director
Joined: 10 Sep 2007
Posts: 934
Re: mgmat QUES ?? [#permalink]

### Show Tags

26 Jul 2008, 08:09
1) 2 > 1 also 4 > 1
5 > 3 also 25 > 1
0 > -1
This statement will always hold true. So question can be answer hence answer should be A or D.

2) x^3 > y.
(4)^3 > 5 but 4 < 5 (counter case for statement 2)
(5)^3 > 4 also 5 > 4 (supporting statement 2)
Thereby Maybe case so on basis of B question cannot be answered.

So answer is A.
SVP
Joined: 28 Dec 2005
Posts: 1542
Re: mgmat QUES ?? [#permalink]

### Show Tags

26 Jul 2008, 08:19
i think its C.

all you know from 1 is that x > y^2, i.e. that x is a positive number. we can have x=1/2 and y=1/2, but y^2=1/4 and so even though x=y, x >y^2 ... so this statement alone cant be sufficient.
Director
Joined: 10 Sep 2007
Posts: 934
Re: mgmat QUES ?? [#permalink]

### Show Tags

26 Jul 2008, 08:38
pmenon wrote:
i think its C.

all you know from 1 is that x > y^2, i.e. that x is a positive number. we can have x=1/2 and y=1/2, but y^2=1/4 and so even though x=y, x >y^2 ... so this statement alone cant be sufficient.

Thanks missed that.
Director
Joined: 20 Sep 2006
Posts: 653
Re: mgmat QUES ?? [#permalink]

### Show Tags

26 Jul 2008, 08:42
abhijit_sen wrote:
1) 2 > 1 also 4 > 1
5 > 3 also 25 > 1
0 > -1
This statement will always hold true. So question can be answer hence answer should be A or D.

2) x^3 > y.
(4)^3 > 5 but 4 < 5 (counter case for statement 2)
(5)^3 > 4 also 5 > 4 (supporting statement 2)
Thereby Maybe case so on basis of B question cannot be answered.

So answer is A.

your are only taking interger values. If you take value of x between 0 and 1. then A is not suff.

Is x > y?

(1) SQRT(X)> y

(2) x^3 > y

1) x > y^2
2) x^3 > y

from 1, X can be 'integere/improper fraction ( X can be any value more than 1)' more than Y or X can be a proper fraction greater than Y
from 2, X can be 'integere/improper fraction ( X can be any value more than 1)' greater than Y or X can be a proper fraction less than Y.

adding together, X is a 'integere/improper fraction ( X can be any value more than 1)' more than Y

IMO C
Re: mgmat QUES ??   [#permalink] 26 Jul 2008, 08:42
Display posts from previous: Sort by

# mgmat QUES ??

 post reply Question banks Downloads My Bookmarks Reviews Important topics

Moderator: chetan2u

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