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

 It is currently 23 Jan 2019, 08:03

### 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 January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
• ### Key Strategies to Master GMAT SC

January 26, 2019

January 26, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
• ### Free GMAT Number Properties Webinar

January 27, 2019

January 27, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.

# Is x- 2xy + y = 0?

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 52431
Is x- 2xy + y = 0?  [#permalink]

### Show Tags

11 Oct 2016, 01:16
00:00

Difficulty:

45% (medium)

Question Stats:

64% (01:41) correct 36% (02:39) wrong based on 104 sessions

### HideShow timer Statistics

Is x- 2xy + y = 0?

(1) Neither x nor y is an odd integer.

(2) Neither x nor y is a prime integer.

_________________
Retired Moderator
Joined: 26 Nov 2012
Posts: 592
Re: Is x- 2xy + y = 0?  [#permalink]

### Show Tags

11 Oct 2016, 03:54
Bunuel wrote:
Is x- 2xy + y = 0?

(1) Neither x nor y is an odd integer.

(2) Neither x nor y is a prime integer.

We don't have any information in the question stem about x and y.

Stat 1: x and y can be even, prime,irrational or rational etc...Insufficient.

Stat 2: x and y can be odd,even,irrational etc...insufficient.

Both : We still don't have clear cut information.

IMO option E.
Board of Directors
Status: Stepping into my 10 years long dream
Joined: 18 Jul 2015
Posts: 3626
Is x- 2xy + y = 0?  [#permalink]

### Show Tags

11 Oct 2016, 06:23
Bunuel wrote:
Is x- 2xy + y = 0?

(1) Neither x nor y is an odd integer.

(2) Neither x nor y is a prime integer.

I believe answer should be E.

Statement 1 : X and Y could be 0, which will make the answer YES and for other, the answer will be NO. INSUFFICIENT
Statement 2 : This could mean x = y = 1 is also valid. Hence, We may get 0 here.

EDITED : Realized that X and Y could both be 0 Also. So, Statement 1 is also not sufficient.
_________________

My GMAT Story: From V21 to V40
My MBA Journey: My 10 years long MBA Dream
My Secret Hacks: Best way to use GMATClub | Importance of an Error Log!
Verbal Resources: All SC Resources at one place | All CR Resources at one place

GMAT Club Inbuilt Error Log Functionality - View More.
New Visa Forum - Ask all your Visa Related Questions - here.
New! Best Reply Functionality on GMAT Club!
Find a bug in the new email templates and get rewarded with 2 weeks of GMATClub Tests for free
Check our new About Us Page here.

VP
Status: It's near - I can see.
Joined: 13 Apr 2013
Posts: 1365
Location: India
GMAT 1: 480 Q38 V22
GPA: 3.01
WE: Engineering (Consulting)
Is x- 2xy + y = 0?  [#permalink]

### Show Tags

Updated on: 11 Oct 2016, 07:37
1
Bunuel wrote:
Is x- 2xy + y = 0?

(1) Neither x nor y is an odd integer.

(2) Neither x nor y is a prime integer.

Statement 1: x & y are not odd integers.

Means they can be anything but odd integers.

If x = 0 & y = 0 as "0" is an even integer answer to the question is YES i.e., $$x- 2xy + y = 0$$

If x = 2 & y = 0, answer to the question is NO i.e., $$x- 2xy + y\neq {0}$$

Not sufficient. (Fractions can also be tried)

Statement 2:

Again we can try x & y = 0 as "0" is not prime and answer to the question is YES. $$x- 2xy + y = 0$$

Try x = 1 & y = 0 , answer to the question is NO. $$x- 2xy + y\neq {0}$$

Not Sufficient

Combining 1 & 2 "x & y are neither prime nor odd"

If x = 0 & y = 0 as "0" is an even integer answer to the question is YES i.e., $$x- 2xy + y = 0$$

x = 4 & y = 4, answer to the question is NO. $$x- 2xy + y\neq {0}$$

IMO (E)
_________________

"Do not watch clock; Do what it does. KEEP GOING."

Originally posted by AkshdeepS on 11 Oct 2016, 06:57.
Last edited by AkshdeepS on 11 Oct 2016, 07:37, edited 2 times in total.
Manager
Joined: 28 Jun 2016
Posts: 207
Concentration: Operations, Entrepreneurship
Re: Is x- 2xy + y = 0?  [#permalink]

### Show Tags

11 Oct 2016, 06:58
abhimahna wrote:
msk0657 wrote:
Bunuel wrote:
Is x- 2xy + y = 0?

(1) Neither x nor y is an odd integer.

(2) Neither x nor y is a prime integer.

We don't have any information in the question stem about x and y.

Stat 1: x and y can be even, prime,irrational or rational etc...Insufficient.

Stat 2: x and y can be odd,even,irrational etc...insufficient.

Both : We still don't have clear cut information.

IMO option E.

I believe answer should be A.

Statement 1 : Whatever the value of x and y be except 1, I believe we will never get a 0 for the given equation. Be it a even, prime, rational, irrational, etc.

Statement 2 : This could mean x = y = 1 is also valid. Hence, We may get 0 here.

For statement 1:

x=y=0 will also give a Yes

Sent from my iPhone using GMAT Club Forum mobile app
Retired Moderator
Joined: 26 Nov 2012
Posts: 592
Re: Is x- 2xy + y = 0?  [#permalink]

### Show Tags

11 Oct 2016, 07:08
abhimahna wrote:
msk0657 wrote:
Bunuel wrote:
Is x- 2xy + y = 0?

(1) Neither x nor y is an odd integer.

(2) Neither x nor y is a prime integer.

We don't have any information in the question stem about x and y.

Stat 1: x and y can be even, prime,irrational or rational etc...Insufficient.

Stat 2: x and y can be odd,even,irrational etc...insufficient.

Both : We still don't have clear cut information.

IMO option E.

I believe answer should be A.

Statement 1 : Whatever the value of x and y be except 1, I believe we will never get a 0 for the given equation. Be it a even, prime, rational, irrational, etc.

Statement 2 : This could mean x = y = 1 is also valid. Hence, We may get 0 here.

0 is an even integer...then A is incorrect..
Non-Human User
Joined: 09 Sep 2013
Posts: 9462
Re: Is x- 2xy + y = 0?  [#permalink]

### Show Tags

19 Apr 2018, 06:34
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 x- 2xy + y = 0? &nbs [#permalink] 19 Apr 2018, 06:34
Display posts from previous: Sort by