Find all School-related info fast with the new School-Specific MBA Forum

It is currently 16 Sep 2014, 13:55

Close

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Is xy > 5? (1) 1 <= x <= 3 and 2 <= y <= 4

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Joined: 27 Dec 2004
Posts: 910
Followers: 1

Kudos [?]: 12 [0], given: 0

GMAT Tests User
Is xy > 5? (1) 1 <= x <= 3 and 2 <= y <= 4 [#permalink] New post 29 Mar 2005, 18:28
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions
Is xy > 5?

(1) 1 <= x <= 3 and 2 <= y <= 4
(2) x + y = 5


I am having a rough time with ineqalities so explanation would be highly appreciated. Thanks
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5097
Location: Singapore
Followers: 19

Kudos [?]: 143 [0], given: 0

GMAT Tests User
 [#permalink] New post 29 Mar 2005, 19:06
1) x is between 1 and 3. y is between 2 and 4.
So xy will lie between 2 and 12. So 1) is not sufficient since xy can be <5 or >5.

2) x+y=5
Possible values:
Question does not state that x and y must be positive, so x=0 or y=0 is possible. If that is the case, xy could be 0. So 2 is insufficient.


1) and 2)
x+y = 5 and 1 <= x <= 3 and 2 <= y <= 4

Possible values:
x=1,y=4 --> xy < 5
x=2,y=3 --> xy >5
x=3,y=2 --> xy >5

So 1) and 2) together are insufficient as well.

E it is.
Senior Manager
Senior Manager
avatar
Joined: 15 Mar 2005
Posts: 425
Location: Phoenix
Followers: 1

Kudos [?]: 9 [0], given: 0

GMAT Tests User
 [#permalink] New post 29 Mar 2005, 21:03
YWilfred did it very well.

I agree with (E).
_________________

Who says elephants can't dance?

Manager
Manager
User avatar
Joined: 04 Mar 2005
Posts: 107
Location: NYC
Followers: 2

Kudos [?]: 2 [0], given: 0

GMAT Tests User
Re: DS - Inequality 1 [#permalink] New post 05 Apr 2005, 17:45
Folaa3 wrote:
Is xy > 5?

(1) 1 <= x <= 3 and 2 <= y <= 4
(2) x + y = 5


I am having a rough time with ineqalities so explanation would be highly appreciated. Thanks


Stmt 1:
If x=1, y=2 then xy <5
If x=3, y=4, xy >5
Hence, Stmt 1 not suff

Stmt 2:
Not suff as x & y cld take any value that satisfies x+y = 5

stmt 1 & 2 taken together:
To satisfy x+y = 5,
values for x & y can be
x=1, y=4=> xy <5
x=2, y=3 => xy >5
Hence Stmt 1 & 2 are insuffiecient

Ans is 'E'
VP
VP
User avatar
Joined: 13 Jun 2004
Posts: 1128
Location: London, UK
Schools: Tuck'08
Followers: 6

Kudos [?]: 24 [0], given: 0

GMAT Tests User
 [#permalink] New post 06 Apr 2005, 04:47
If you're not confortable with those kind of questions, you should always try to find what the problem is aksking you to find and then try to find the contrary. When the statement is good and when it is false, always try the extreme possibilities.

Answer E for this one. Just take examples :

Statement 1 : 1 <= x <= 3 and 2 <= y <= 4
if x=1 and y=2 ; xy=2 so xy<5
if x=3 and y=4 ; xy=12 so xy>5
so statement 1 is insuff

Statement 2 : x + y = 5
if x=2 and y=3 ; xy=6 so xy>5
if x=-5 and y=10 ; xy=-50 so xy<5

together 1 and 2 :
if x=1 and y=4 ; xy=4 so xy<5
if x=2 and y=3 ; xy=6 so xy>5
insuff
  [#permalink] 06 Apr 2005, 04:47
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic If xy < 5, is x < 1 ? (1) | y | > 5 (2) x / y > 0 rxs0005 1 07 Feb 2012, 15:36
If -1/2 <= x <= -1/3, and -1/4 <= y <= -1/5, ggarr 4 05 Jan 2007, 10:57
4x > 3y? 1 4x > 2y 2. x/y <1 jinesh 5 01 Feb 2006, 01:02
if -1/2 <= x<= -1/3 adn -1/4<=y<=-1/5 what sperumba 10 21 Jan 2006, 14:40
Is xy < 6? (1) x < 3 and y < 2 (2) < x < 2/3 Folaa3 3 31 Mar 2005, 17:38
Display posts from previous: Sort by

Is xy > 5? (1) 1 <= x <= 3 and 2 <= y <= 4

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

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®.