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

 It is currently 28 May 2015, 22:28

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

I would be very grateful if people provided explanations for

Author Message
TAGS:
Intern
Joined: 26 Jan 2006
Posts: 1
Followers: 0

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

I would be very grateful if people provided explanations for [#permalink]  02 Mar 2006, 23:03
I would be very grateful if people provided explanations for the attached GMATPrep problems. The official answer is the option that is highlighted in blue with a square.

Attachments

7-12.pdf [160.64 KiB]

1-6.pdf [147.23 KiB]

 Kaplan GMAT Prep Discount Codes Knewton GMAT Discount Codes GMAT Pill GMAT Discount Codes
Director
Joined: 05 Feb 2006
Posts: 901
Followers: 1

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

II question....

We know the two lenghts of the triangular is 5 and 2.
The key here is to keep in mind that the sum of any two sides of the triangular cannot be less than the length of the remaining side....

So..

I) asks if the the perimeter could be equal to 9.
No, because 5+2+2=9, 2+2=4 which is <5

II) perimeter = 15
No, because 5+2+8=15, but 5+2=7 which is <8

III) perimeter = 19
No, because 5+2+12=19, but 5+2=7 which is <12
Director
Joined: 05 Feb 2006
Posts: 901
Followers: 1

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

Cannot provide you with the good explanation of I question....
Simply picked some numbers identified a pattern and chose the right answer...
SVP
Joined: 24 Sep 2005
Posts: 1891
Followers: 11

Kudos [?]: 142 [0], given: 0

SimaQ wrote:
II question....

We know the two lenghts of the triangular is 5 and 2.
The key here is to keep in mind that the sum of any two sides of the triangular cannot be less than the length of the remaining side....

to be explicit, let a, b and c be the three sides
Assign a, b to the two known sides.
c must satisfy the condition that is:
|a-b| < c< a+b

(| | is used here because we don't know if a> b or vice versa)

Apply this rule, the third side must be in the range from 3 to 7 exclusively

so the perimeter must be from 10 to 14

None of the choices satisfies.
Manager
Joined: 04 Jan 2006
Posts: 58
Followers: 1

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

Expln of 1st qn:

LCM of x,6,9

stmt 1: LCM of x and 6 is 30.
So LCM of x,6,9 is the same as the LCM of 30 and 9
Suf

stmt 2:
Same as above, if you know the LCM of 2 umbers, The LCM of that LCM and the third number is the LCM of all the three.
Suf

So D.
SVP
Joined: 14 Dec 2004
Posts: 1707
Followers: 1

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

1) For LCM question.
I go for "D"

2) For perimeter question
None of these!
Similar topics Replies Last post
Similar
Topics:
2 All intelligent people are nearsighted. I am very 12 18 Nov 2009, 10:24
All intelligent people are nearsighted. I am very 4 25 Jun 2009, 03:15
1 I found the below explanation is very good and thought of 6 28 Jan 2009, 14:26
2 All intelligent people are nearsighted. I am very 6 08 Sep 2007, 19:19
I would be grateful for your advice. Consider the sqaure 1 23 Dec 2006, 13:28
Display posts from previous: Sort by