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

It is currently 23 Oct 2014, 08:43

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

2 Questions Practice Set (part 1)

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Intern
Intern
avatar
Joined: 08 Jan 2007
Posts: 17
Followers: 0

Kudos [?]: 1 [1] , given: 0

2 Questions Practice Set (part 1) [#permalink] New post 07 Jan 2008, 02:01
1
This post received
KUDOS
Hi guys I was wondering if you can explain to me how to do the following two questions?
Attachments

File comment: SET 2
question2.jpg
question2.jpg [ 91.69 KiB | Viewed 802 times ]

File comment: SET 1
Question1.jpg
Question1.jpg [ 64.7 KiB | Viewed 801 times ]

SVP
SVP
avatar
Joined: 21 Jul 2006
Posts: 1551
Followers: 8

Kudos [?]: 234 [0], given: 1

Re: 2 Questions Practice Set (part 1) [#permalink] New post 07 Jan 2008, 02:52
for the first one, the answer is C. Here is the explanation why:

For any product of 2 numbers, for example X and Y:

The product is XY.
XY is also equal to highest common fact of X and Y multiply by least common factor of X and Y.

example: 10 and 15

10 times 15 = 150

highest common factor of 10 and 15= 5
least common factor of 10 and 15= 30

30 times 5= 150 as well.
hope this helps
1 KUDOS received
Manager
Manager
avatar
Joined: 01 Sep 2007
Posts: 104
Location: Astana
Followers: 1

Kudos [?]: 17 [1] , given: 0

Re: 2 Questions Practice Set (part 1) [#permalink] New post 07 Jan 2008, 03:54
1
This post received
KUDOS
for the second problem, E should be the answer

A, B, C all involve degrees.

A) X^4>=1; x^4-1>=0
(x^2+1)(x^2-1) = (x^2+1)(x+1)(x-1)>=0
x>=1; x>=-1; infinite set of numbers. eliminate

B) and C) x^3<=27; x <=3 (correct me if i'm wrong pls). same goes with C. they are infine sets

not sure about D). if someone could shed a light on it.
thanks!
1 KUDOS received
Director
Director
avatar
Joined: 09 Aug 2006
Posts: 767
Followers: 1

Kudos [?]: 52 [1] , given: 0

Re: 2 Questions Practice Set (part 1) [#permalink] New post 07 Jan 2008, 04:57
1
This post received
KUDOS
#1:
C

xy = LCM of x,y * HCF of x, y (see tarek's explanation above).



#2:
E.
A, B, C have infinite values.
Consider D:
2<= |x| <= 5
If x is +ve then: 2 <= x <= 5
If x is -ve then: -5 <= x <= -2
We have 2 line segments but the question is asking for only 1.
For E:
-.66 <= x <= .66
Re: 2 Questions Practice Set (part 1)   [#permalink] 07 Jan 2008, 04:57
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic workbook/practice questions sets downloadable divyap2002 1 17 Sep 2014, 05:14
4 Experts publish their posts in the topic A 2 Part question egmat 5 01 Jan 2013, 21:48
Experts publish their posts in the topic 2-Part IR Question egmat 3 03 Dec 2012, 09:39
2 2 Part question! ShalabhsQuants 2 07 Sep 2012, 06:00
Experts publish their posts in the topic practice questions for SEts KocharRohit 1 17 Oct 2009, 02:56
Display posts from previous: Sort by

2 Questions Practice Set (part 1)

  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®.