It is currently 21 Oct 2017, 23:44

### 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

# What is the sum of a certain pair of consecutive odd

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Intern
Joined: 17 May 2008
Posts: 14

Kudos [?]: 25 [2], given: 0

What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

12 Jun 2008, 04:59
2
KUDOS
6
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

61% (00:40) correct 39% (00:38) wrong based on 340 sessions

### HideShow timer Statistics

What is the sum of a certain pair of consecutive odd integers?

(1) At least one of the integers is negative.
(2) At least one of the integers is positive.

OPEN DISCUSSION OF THIS QUESTION IS HERE: https://gmatclub.com/forum/what-is-the- ... 07654.html
[Reveal] Spoiler: OA

_________________

Impossible is nothing...

Last edited by Bunuel on 14 Aug 2017, 09:44, edited 2 times in total.
Edited the question and added the OA

Kudos [?]: 25 [2], given: 0

CEO
Joined: 17 May 2007
Posts: 2947

Kudos [?]: 667 [0], given: 210

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

12 Jun 2008, 05:08
1
This post was
BOOKMARKED
C

From A The values of x and y can be anything e.g. 1 3 , 5 7 , -1 1 as long as either is positive <-- INSUFFICIENT

From B The values of x and y can also be anything as long as one of them is negative e.g. -5 -3 , -1 1 etc. <-- INSUFFICIENT

When you combine them then the only values x and y can be are -1 and 1. Hence their sum is 0. Hence SUFFICIENT.

Kudos [?]: 667 [0], given: 210

Senior Manager
Joined: 29 Aug 2005
Posts: 272

Kudos [?]: 69 [0], given: 0

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

12 Jun 2008, 08:58
bsd_lover wrote:
C

From A The values of x and y can be anything e.g. 1 3 , 5 7 , -1 1 as long as either is positive <-- INSUFFICIENT

From B The values of x and y can also be anything as long as one of them is negative e.g. -5 -3 , -1 1 etc. <-- INSUFFICIENT

When you combine them then the only values x and y can be are -1 and 1. Hence their sum is 0. Hence SUFFICIENT.

BSD can u please elaborate the explanation (for both statements put together) When you combine them then the only values x and y can be are -1 and 1. Hence their sum is 0.

Many thanks
_________________

The world is continuous, but the mind is discrete

Kudos [?]: 69 [0], given: 0

Director
Joined: 27 May 2008
Posts: 541

Kudos [?]: 363 [0], given: 0

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

12 Jun 2008, 09:38
vdhawan1 - These are "consecutive" odd integers. if you take any -ve odd interger other than -1, the corresponding will also be negative, so the set will not satisfy both statements. Only (-1,1) will satify both.

Kudos [?]: 363 [0], given: 0

Intern
Joined: 20 Sep 2013
Posts: 25

Kudos [?]: 7 [0], given: 24

Location: India
Schools: IIM-L '15 (A)
GMAT 1: 710 Q50 V37
WE: Information Technology (Computer Software)
Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

08 Oct 2013, 01:58
durgesh79 wrote:
vdhawan1 - These are "consecutive" odd integers. if you take any -ve odd interger other than -1, the corresponding will also be negative, so the set will not satisfy both statements. Only (-1,1) will satify both.

Can someone expain, why the set (-5, -3,-1,1) can't be taken? It has both"Atleast one -ve" and "one +ve odd integer", and is a pair of consecutive odd integers.

Kudos [?]: 7 [0], given: 24

Math Expert
Joined: 02 Sep 2009
Posts: 41889

Kudos [?]: 129205 [3], given: 12196

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

08 Oct 2013, 02:07
3
KUDOS
Expert's post
1
This post was
BOOKMARKED
asingh203 wrote:
durgesh79 wrote:
What is the sum of a certain pair of consecutive odd integers?

(1) At least one of the integers is negative.
(2) At least one of the integers is positive.

vdhawan1 - These are "consecutive" odd integers. if you take any -ve odd interger other than -1, the corresponding will also be negative, so the set will not satisfy both statements. Only (-1,1) will satify both.

Can someone expain, why the set (-5, -3,-1,1) can't be taken? It has both"Atleast one -ve" and "one +ve odd integer", and is a pair of consecutive odd integers.

That's because we have a pair of consecutive odd integers, so 2 integers only.

Does this make sense?
_________________

Kudos [?]: 129205 [3], given: 12196

Intern
Joined: 20 Sep 2013
Posts: 25

Kudos [?]: 7 [0], given: 24

Location: India
Schools: IIM-L '15 (A)
GMAT 1: 710 Q50 V37
WE: Information Technology (Computer Software)
Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

09 Oct 2013, 10:08
Ahh.. my bad, I misread it. Thanks for clarifying!
Bunuel wrote:
asingh203 wrote:
durgesh79 wrote:
What is the sum of a certain pair of consecutive odd integers?

(1) At least one of the integers is negative.
(2) At least one of the integers is positive.

vdhawan1 - These are "consecutive" odd integers. if you take any -ve odd interger other than -1, the corresponding will also be negative, so the set will not satisfy both statements. Only (-1,1) will satify both.

Can someone expain, why the set (-5, -3,-1,1) can't be taken? It has both"Atleast one -ve" and "one +ve odd integer", and is a pair of consecutive odd integers.

That's because we have a pair of consecutive odd integers, so 2 integers only.

Does this make sense?

Kudos [?]: 7 [0], given: 24

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 16576

Kudos [?]: 273 [0], given: 0

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

17 Apr 2015, 04:54
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.
_________________

Kudos [?]: 273 [0], given: 0

Senior Manager
Joined: 17 Jun 2015
Posts: 262

Kudos [?]: 38 [0], given: 165

GMAT 1: 540 Q39 V26
GMAT 2: 680 Q46 V37
Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

20 Dec 2015, 10:34
"What is the integer". we need to find the value.

There are multiple values when the two statements are independently considered. Hence, both alone are insufficient. Done away with options A,B D

Considering the two, there is only one pair of consecutive negative and positive odd numbers i.e. -1 and +1. Sum is 0

C
_________________

Fais de ta vie un rêve et d'un rêve une réalité

Kudos [?]: 38 [0], given: 165

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 16576

Kudos [?]: 273 [0], given: 0

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

14 Jan 2017, 22:51
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.
_________________

Kudos [?]: 273 [0], given: 0

Math Expert
Joined: 02 Sep 2009
Posts: 41889

Kudos [?]: 129205 [0], given: 12196

Re: What is the sum of a certain pair of consecutive odd [#permalink]

### Show Tags

14 Aug 2017, 09:44
What is the sum of a certain pair of consecutive odd integers?

(1) At least one of the integers is negative --> infinite pairs are possible: ... (-3, -1); (-17, -15); ... (-1, 1); ... Not sufficient.
(2) At least one of the integers is positive --> infinite pairs are possible: ... (3, 5); (19, 21); ... (-1, 1); ... Not sufficient.

(1)+(2) One odd integer must be positive and another negative. As they are consecutive odd integers, there is only one pair possible (-1, 1) --> -1+1=0. Sufficient.

OPEN DISCUSSION OF THIS QUESTION IS HERE: https://gmatclub.com/forum/what-is-the- ... 07654.html
_________________

Kudos [?]: 129205 [0], given: 12196

Re: What is the sum of a certain pair of consecutive odd   [#permalink] 14 Aug 2017, 09:44
Display posts from previous: Sort by

# What is the sum of a certain pair of consecutive odd

 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®.