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

It is currently 25 Jul 2014, 08:04

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

Properties of Intergers Question

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 20 Aug 2013
Posts: 2
Location: United States
Followers: 0

Kudos [?]: 5 [0], given: 0

GMAT ToolKit User
Properties of Intergers Question [#permalink] New post 15 Oct 2013, 00:35
Can someone help me what I am missing here? It seems easy question, but I just can't see what I should look for.

If x is an integer and y =3x+2, which of the following CANNOT be a divisor of y?

A) 4
B) 5
C) 6
D) 7
E) 8

No idea what to look for...
Expert Post
Veritas Prep GMAT Instructor
User avatar
Joined: 16 Oct 2010
Posts: 4579
Location: Pune, India
Followers: 1029

Kudos [?]: 4484 [0], given: 162

Re: Properties of Intergers Question [#permalink] New post 15 Oct 2013, 01:58
Expert's post
cruisingjerry wrote:
Can someone help me what I am missing here? It seems easy question, but I just can't see what I should look for.

If x is an integer and y =3x+2, which of the following CANNOT be a divisor of y?

A) 4
B) 5
C) 6
D) 7
E) 8

No idea what to look for...


What is the information given by y = 3x + 2 (where x is an integer)? It tells us that y is 2 more than a multiple of 3. This means y cannot be a multiple of 3.
Hence y is certainly not a multiple of 6 because for that to happen y must be a multiple of 3 as well as 2.

Answer (C)
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Save $100 on Veritas Prep GMAT Courses And Admissions Consulting
Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.

Veritas Prep Reviews

Intern
Intern
avatar
Joined: 20 Aug 2013
Posts: 2
Location: United States
Followers: 0

Kudos [?]: 5 [0], given: 0

GMAT ToolKit User
Re: Properties of Intergers Question [#permalink] New post 15 Oct 2013, 20:35
VeritasPrepKarishma wrote:
cruisingjerry wrote:
Can someone help me what I am missing here? It seems easy question, but I just can't see what I should look for.

If x is an integer and y =3x+2, which of the following CANNOT be a divisor of y?

A) 4
B) 5
C) 6
D) 7
E) 8

No idea what to look for...


What is the information given by y = 3x + 2 (where x is an integer)? It tells us that y is 2 more than a multiple of 3. This means y cannot be a multiple of 3.
Hence y is certainly not a multiple of 6 because for that to happen y must be a multiple of 3 as well as 2.

Answer (C)

Thank you very much. :)
Manager
Manager
avatar
Joined: 04 Sep 2012
Posts: 144
Followers: 1

Kudos [?]: 18 [0], given: 27

GMAT ToolKit User
Re: Properties of Intergers Question [#permalink] New post 15 Oct 2013, 22:43
cruisingjerry wrote:
Can someone help me what I am missing here? It seems easy question, but I just can't see what I should look for.

If x is an integer and y =3x+2, which of the following CANNOT be a divisor of y?

A) 4
B) 5
C) 6
D) 7
E) 8

No idea what to look for...


Whenever I don't have any idea what to look for I use hit and trial , please see if it suits you, you can use the same as well.

My approach is to use hit and trial and I always start with B,C, D options, it works most of the times(Personal Experience).

You just need to find any value of x for which y is divisible by given options .

No value exist of x for which y is divisible by 6 hence answer C.

Lengthy surely , but effective most of the times.

Regards,
Abhinav
_________________

Regards,
Abhinav

GMAT 1 - 580 (Q47 V23) a-tight-slap-on-face-149457.html

GMAT 2 - 670 (Q48 V34) 670-one-month-off-from-office-and-2-months-hard-work-163761.html#p1297561

“If you don't change your life; your life will change you.”

Re: Properties of Intergers Question   [#permalink] 15 Oct 2013, 22:43
    Similar topics Author Replies Last post
Similar
Topics:
Intergers!! DeeptiM 3 14 Aug 2011, 12:15
Number properties (question 4) feruz77 3 16 Oct 2010, 23:41
5 Experts publish their posts in the topic Number properties question roceeet 24 26 Jan 2010, 12:02
1 # Properties Question mkrump 2 08 May 2009, 06:20
properties of numbers question darlameow 1 19 Aug 2008, 10:00
Display posts from previous: Sort by

Properties of Intergers Question

  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®.