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

It is currently 22 Oct 2018, 18:03

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

What is the greatest common factor of positive integers x and y

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
B
Joined: 08 Jul 2017
Posts: 26
GMAT 1: 620 Q48 V29
CAT Tests
What is the greatest common factor of positive integers x and y  [#permalink]

Show Tags

New post 18 Apr 2018, 03:34
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

78% (00:18) correct 22% (00:29) wrong based on 9 sessions

HideShow timer Statistics

93. What is the greatest common factor of positive integers x and y?
(1) x and y share only one common factor.
(2) x and y are unique prime numbers.



Any body explain me why stmt 1 is true?
Intern
Intern
avatar
B
Joined: 11 Mar 2015
Posts: 35
Re: What is the greatest common factor of positive integers x and y  [#permalink]

Show Tags

New post 18 Apr 2018, 04:05
Statement (1) I think only one common factor means they are prime numbers. Hence, the only common factor is 1.

SUFFICIENT.

Statement (2) It says that X and Y are unique prime numbers. Hence, without 1 and the numbers (X, Y) them-self there
have not got any other number. Therefore, the maximum common factor is 1.

SUFFICIENT .
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50042
Re: What is the greatest common factor of positive integers x and y  [#permalink]

Show Tags

New post 18 Apr 2018, 12:09
robu1 wrote:
93. What is the greatest common factor of positive integers x and y?
(1) x and y share only one common factor.
(2) x and y are unique prime numbers.



Any body explain me why stmt 1 is true?


Discussed here: https://gmatclub.com/forum/what-is-the- ... 65273.html

Hope it helps.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

GMAT Club Bot
Re: What is the greatest common factor of positive integers x and y &nbs [#permalink] 18 Apr 2018, 12:09
Display posts from previous: Sort by

What is the greatest common factor of positive integers x and y

  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®.