Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a : GMAT Data Sufficiency (DS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 21 Jan 2017, 16:41

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a

Author Message
TAGS:

### Hide Tags

Director
Status: Finally Done. Admitted in Kellogg for 2015 intake
Joined: 25 Jun 2011
Posts: 536
Location: United Kingdom
GMAT 1: 730 Q49 V45
GPA: 2.9
WE: Information Technology (Consulting)
Followers: 74

Kudos [?]: 2970 [1] , given: 217

Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a [#permalink]

### Show Tags

19 Mar 2012, 03:59
1
KUDOS
4
This post was
BOOKMARKED
00:00

Difficulty:

45% (medium)

Question Stats:

48% (01:30) correct 52% (00:26) wrong based on 44 sessions

### HideShow timer Statistics

Is q^2 an odd integer?

(1) q is an odd integer.
(2) q^4 is an odd integer.

How come the answer will be A? For me it should be straight D or I am reading something wrong.
[Reveal] Spoiler: OA

_________________

Best Regards,
E.

MGMAT 1 --> 530
MGMAT 2--> 640
MGMAT 3 ---> 610
GMAT ==> 730

Math Expert
Joined: 02 Sep 2009
Posts: 36590
Followers: 7092

Kudos [?]: 93362 [1] , given: 10557

Re: Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a [#permalink]

### Show Tags

19 Mar 2012, 04:09
1
KUDOS
Expert's post
Is q^2 an odd integer?

Notice that we are not told that q is an integer.

(1) q is an odd integer --> q^2 is odd. Sufficient.

(2) q^4 is an odd integer --> if $$q=odd$$ then the answer would be YES, but if $$q=\sqrt[4]{3}$$ then the answer would be NO, since $$q^2=\sqrt{3}$$ is not an integer at all. Not sufficient.

Hope it's clear.
_________________
Math Expert
Joined: 02 Sep 2009
Posts: 36590
Followers: 7092

Kudos [?]: 93362 [1] , given: 10557

Re: Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a [#permalink]

### Show Tags

19 Mar 2012, 04:18
1
KUDOS
Expert's post
1
This post was
BOOKMARKED
Intern
Joined: 13 Jul 2011
Posts: 44
Followers: 0

Kudos [?]: 0 [0], given: 8

Re: Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a [#permalink]

### Show Tags

19 Mar 2012, 20:01
Hi Bunuel,

q^4 is an odd integer --> if q=odd then the answer would be YES, but if q=\sqrt{3} then the answer would be NO, since \sqrt{3} is not an integer at all. Not sufficient.

My Question is if Q is equal to root 3 then Q square will be 3 which is odd. Which makes it sufficient to answer that Q square will be odd.

Math Expert
Joined: 02 Sep 2009
Posts: 36590
Followers: 7092

Kudos [?]: 93362 [0], given: 10557

Re: Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a [#permalink]

### Show Tags

19 Mar 2012, 22:31
vinayaerostar wrote:
Hi Bunuel,

q^4 is an odd integer --> if q=odd then the answer would be YES, but if q=\sqrt{3} then the answer would be NO, since \sqrt{3} is not an integer at all. Not sufficient.

My Question is if Q is equal to root 3 then Q square will be 3 which is odd. Which makes it sufficient to answer that Q square will be odd.

There was a formatting error, it should be: " if $$q=\sqrt[4]{3}$$ then the answer would be NO, since $$q^2=\sqrt{3}$$ is not an integer at all".
_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 13489
Followers: 576

Kudos [?]: 163 [0], given: 0

Re: Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a [#permalink]

### Show Tags

25 Dec 2015, 05:10
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a   [#permalink] 25 Dec 2015, 05:10
Similar topics Replies Last post
Similar
Topics:
5 Is A an odd integer? 7 19 May 2016, 21:48
12 Is p^2 an odd integer? 7 06 Feb 2014, 00:22
8 If n is an integer, is n + 1 odd? 8 30 Jul 2012, 01:15
Is s an odd integer? 4 11 Feb 2012, 18:50
9 Is s an odd integer? 8 19 Dec 2010, 18:45
Display posts from previous: Sort by

# Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a

 Powered by phpBB © phpBB Group and phpBB SEO 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®.