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

It is currently 20 Mar 2019, 16:37

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

A real number N is of the form p/q, where p and q are both distinct po

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

Hide Tags

 
DS Forum Moderator
avatar
P
Joined: 22 Aug 2013
Posts: 1438
Location: India
Premium Member
A real number N is of the form p/q, where p and q are both distinct po  [#permalink]

Show Tags

New post 21 Jul 2018, 10:54
2
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

51% (02:13) correct 49% (02:45) wrong based on 61 sessions

HideShow timer Statistics

A real number N is of the form p/q, where p and q are both distinct positive integers with a greatest common divisor of 1. If p > q, is N > 1.2 ?

(1) Lowest common multiple of p and q is 28.

(2) Difference between p and q is 3.
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7422
Re: A real number N is of the form p/q, where p and q are both distinct po  [#permalink]

Show Tags

New post 21 Jul 2018, 19:18
A real number N is of the form p/q, where p and q are both distinct positive integers with a greatest common divisor of 1. If p > q, is N > 1.2 ?

GCD as 1 means both p and q are co-prime.


(1) Lowest common multiple of p and q is 28.
Since the numbers are co-prime, their LCM is nothing but their product.
p*q=28=2^2*7
Only way is either when p=7 and q=4 or when p=28 and q=1.
In both cases, p/q >1.2
Sufficient

(2) Difference between p and q is 3.
Say p and q are small, Ans will be yes.... 8/5=1.4
But if the numbers are bigger, say 103/100=1.03, Ans will be no
Insufficient

A
_________________

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
4) Base while finding % increase and % decrease : https://gmatclub.com/forum/percentage-increase-decrease-what-should-be-the-denominator-287528.html


GMAT Expert

Intern
Intern
avatar
B
Joined: 16 Aug 2018
Posts: 28
Concentration: General Management, Strategy
Schools: Guanghua"21 (A)
GMAT 1: 700 Q49 V36
Re: A real number N is of the form p/q, where p and q are both distinct po  [#permalink]

Show Tags

New post 18 Aug 2018, 07:37
2): 28 paired with 1,2,4,7,14
14 paired with 4.
all of these give a N>1.2
GMAT Club Bot
Re: A real number N is of the form p/q, where p and q are both distinct po   [#permalink] 18 Aug 2018, 07:37
Display posts from previous: Sort by

A real number N is of the form p/q, where p and q are both distinct po

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


Copyright

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®.