Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 03 May 2015, 02:37

### 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

Author Message
TAGS:
Manager
Joined: 08 Oct 2005
Posts: 101
Followers: 1

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

What is the sum of a certain pair of consecutive odd [#permalink]  05 Aug 2006, 07:21
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
Senior Manager
Joined: 14 Jul 2005
Posts: 402
Followers: 1

Kudos [?]: 12 [0], given: 0

C

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

=> 1 or more integer is negative
e.g. -1 , 1 = -1 + 1 = 0
but if -3 + -1 = 4

Not sufficient

(2) At least one of the integers is positive

=> 1 or more positive

Again, -1 + 1 = 0
Also, 1 + 3 = 4

Hence not sufficient.

But combining them atleast 1 positive and 1 negative (and they have to be consecutive odd numbers) then only possibilities -1 and +1.

Thus answer is 0 i.e. C
Manager
Joined: 20 Mar 2006
Posts: 200
Followers: 1

Kudos [?]: 1 [0], given: 0

Re: very confusing---paif of integer [#permalink]  05 Aug 2006, 10:15
ong 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

(1) could be (-1,1) sum is zero
could be (-3,-1) sum is -4

Insuff BCE

(2) could be(1,3) sume is 4
could be (-1,1) sum is 0

Insuff CE
(1) & (2)
Has to be (-1,1) and sum is zero

Hence C
Senior Manager
Joined: 21 Jun 2006
Posts: 287
Followers: 1

Kudos [?]: 30 [0], given: 0

C

both conditions together prove that the nos are -1 and
Manager
Joined: 08 Oct 2005
Posts: 101
Followers: 1

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

gmatornot wrote:
C

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

=> 1 or more integer is negative
e.g. -1 , 1 = -1 + 1 = 0
but if -3 + -1 = 4

Not sufficient

(2) At least one of the integers is positive

=> 1 or more positive

Again, -1 + 1 = 0
Also, 1 + 3 = 4

Hence not sufficient.

But combining them atleast 1 positive and 1 negative (and they have to be consecutive odd numbers) then only possibilities -1 and +1.

Thus answer is 0 i.e. C

OA is C ---thanks you
Similar topics Replies Last post
Similar
Topics:
What is the product of a certain pair of consecutive odd 7 15 Oct 2010, 23:27
1 What is the sum of a certain pair of consecutive odd 7 12 Jun 2008, 03:59
What is the sum of a certain pair of consecutive odd 1 04 May 2008, 11:56
What is the sum of a certain pair of consecutive odd 5 30 Aug 2006, 03:29
Display posts from previous: Sort by