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

It is currently 19 Mar 2019, 20:17

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

Is y an integer? (1) y^3 is an integer (2) 3y is an integer

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

Hide Tags

 
Manager
Manager
avatar
S
Joined: 01 Nov 2017
Posts: 55
Location: India
Premium Member CAT Tests
Is y an integer? (1) y^3 is an integer (2) 3y is an integer  [#permalink]

Show Tags

New post Updated on: 18 Feb 2019, 02:00
2
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

33% (00:47) correct 67% (01:09) wrong based on 21 sessions

HideShow timer Statistics

Is y an integer?

(1) y^3 is an integer
(2) 3y is an integer

Originally posted by raghavrf on 18 Feb 2019, 01:57.
Last edited by Bunuel on 18 Feb 2019, 02:00, edited 1 time in total.
Renamed the topic and edited the question.
CEO
CEO
User avatar
D
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2836
Location: India
GMAT: INSIGHT
Schools: Darden '21
WE: Education (Education)
Reviews Badge
Re: Is y an integer? (1) y^3 is an integer (2) 3y is an integer  [#permalink]

Show Tags

New post 18 Feb 2019, 05:20
raghavrf wrote:
Is y an integer?

(1) y^3 is an integer
(2) 3y is an integer



Question: Is y an Integer?

Statement 1: \(y^3\)is an integer

If \(y^3 = 1\), y = 1 i.e. YES an Integer
If \(y^3 = 2\), \(y = 2^{1/3}\) i.e. NOT an Integer

NOT SUFFICIENT

Statement 2: \(3y\)is an integer

If \(3y = 1\), y = 1/3 i.e. NOT an Integer
If \(3y = 3\), \(y = 1\) i.e. YES an Integer

NOT SUFFICIENT

Combining the two statements

\(y^3\) is an Integer i.e. y is definitely not a fraction
and \(3y\) is an Integer

i.e. y must be an Integer

Sufficient

Answetr: Option C
_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

GMAT Club Bot
Re: Is y an integer? (1) y^3 is an integer (2) 3y is an integer   [#permalink] 18 Feb 2019, 05:20
Display posts from previous: Sort by

Is y an integer? (1) y^3 is an integer (2) 3y is an integer

  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®.