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

 It is currently 19 Oct 2018, 12:55

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

What is the greatest common divisor of positive integers m and n ?

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Intern
Joined: 16 May 2018
Posts: 25
What is the greatest common divisor of positive integers m and n ?  [#permalink]

Show Tags

04 Oct 2018, 12:35
1
00:00

Difficulty:

35% (medium)

Question Stats:

82% (01:04) correct 18% (00:01) wrong based on 11 sessions

HideShow timer Statistics

What is the greatest common divisor of positive integers m and n ?

(1) m is a prime number.
(2) 2n = 7m
Senior Manager
Joined: 19 Oct 2013
Posts: 303
Location: Kuwait
GPA: 3.2
WE: Engineering (Real Estate)
Re: What is the greatest common divisor of positive integers m and n ?  [#permalink]

Show Tags

04 Oct 2018, 16:13
What is the greatest common divisor of positive integers m and n ?

(1) m is a prime number.
(2) 2n = 7m

1)
m is a prime means 2,3,5,7,11 etc..
n could be anything if it is 4 then the common divisor is 2

If it is 1 then the GCD is 1

Insufficient.

2) 2n = 7m

If n = 7 then m = 2 and the GCD is 1

if n = 14 then m = 4 the GCD is 2

Insufficient.

When combined together 2n = 7m and m is prime

Let m = 2 then n = 7 and m and n have no common factor. GCD = 1

Posted from my mobile device
Math Expert
Joined: 02 Sep 2009
Posts: 50002
Re: What is the greatest common divisor of positive integers m and n ?  [#permalink]

Show Tags

04 Oct 2018, 21:13
What is the greatest common divisor of positive integers m and n ?

(1) m is a prime number.
(2) 2n = 7m

Please search before posting: https://gmatclub.com/forum/what-is-the- ... 79412.html
_________________
Re: What is the greatest common divisor of positive integers m and n ? &nbs [#permalink] 04 Oct 2018, 21:13
Display posts from previous: Sort by

What is the greatest common divisor of positive integers m and n ?

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

 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®.