GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 22 Jul 2018, 04:01

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.

Close

Request Expert Reply

Confirm Cancel

If a and b are positive integers and a>b, is a/b an integer?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Revolution GMAT Instructor
User avatar
V
Joined: 16 Aug 2015
Posts: 5866
GMAT 1: 760 Q51 V42
GPA: 3.82
Premium Member
If a and b are positive integers and a>b, is a/b an integer?  [#permalink]

Show Tags

New post 19 Sep 2017, 00:07
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

63% (00:42) correct 37% (00:30) wrong based on 57 sessions

HideShow timer Statistics

[GMAT math practice question]

If a and b are positive integers and a>b, is a/b an integer?

1) a is a multiple of 10
2) b is a multiple of 5

_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only $99 for 3 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"

Director
Director
User avatar
V
Status: Preparing for GMAT
Joined: 25 Nov 2015
Posts: 677
Location: India
GPA: 3.64
GMAT ToolKit User Premium Member Reviews Badge
Re: If a and b are positive integers and a>b, is a/b an integer?  [#permalink]

Show Tags

New post 19 Sep 2017, 03:35
MathRevolution wrote:
[GMAT math practice question]

If a and b are positive integers and a>b, is a/b an integer?

1) a is a multiple of 10
2) b is a multiple of 5


Given a>b
S1 - a can be 10,20,30...
Not sufficient
S2 - b is given , no info on a.
Not sufficient
Combining, a/b may or may not be an integer depending on b is multiple of 10 or of the form 5,15,25...
Not sufficient

Answer E

Please press kudos, if u liked my post!
_________________

Please give kudos, if you like my post

When the going gets tough, the tough gets going...

Expert Post
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 6274
Re: If a and b are positive integers and a>b, is a/b an integer?  [#permalink]

Show Tags

New post 19 Sep 2017, 03:36
MathRevolution wrote:
[GMAT math practice question]

If a and b are positive integers and a>b, is a/b an integer?

1) a is a multiple of 10
2) b is a multiple of 5



Hi...
a/b will be an integer only if b is a factor of a..

Let's see the statements..
1) a is a multiple of 10.
a is a multiple of 2 and 5 surely
Nothing about b
Insufficient

2) b is a multiple of 5
Nothing about a
Insufficient

Combined..
Easy to fall for C
a is a multiple of 2 and 5 AND b is a multiple of 5..
But they can have other factors too..
Say a=20, b=5..... Ans YES
But say a=20, b=15...and NO
Insufficient

E
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


GMAT online Tutor

Expert Post
Math Revolution GMAT Instructor
User avatar
V
Joined: 16 Aug 2015
Posts: 5866
GMAT 1: 760 Q51 V42
GPA: 3.82
Premium Member
Re: If a and b are positive integers and a>b, is a/b an integer?  [#permalink]

Show Tags

New post 21 Sep 2017, 00:55
=>

When a = 10, b = 5, we have a/b = 2, which is an integer.
When a = 10, b = 20, we have a/b = 1/2, which is not an integer.

Ans: E
_________________

MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only $99 for 3 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"

Re: If a and b are positive integers and a>b, is a/b an integer? &nbs [#permalink] 21 Sep 2017, 00:55
Display posts from previous: Sort by

If a and b are positive integers and a>b, is a/b an integer?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  

Events & Promotions

PREV
NEXT


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

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®.