Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 27 May 2017, 02:54

### 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

# Source: GMATPrep I would like to understand the concept

Author Message
VP
Joined: 30 Jun 2008
Posts: 1034
Followers: 14

Kudos [?]: 613 [0], given: 1

Source: GMATPrep I would like to understand the concept [#permalink]

### Show Tags

10 Oct 2008, 09:01
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Source: GMATPrep

I would like to understand the concept behind this.
Attachments

Remainder.jpg [ 10.97 KiB | Viewed 749 times ]

_________________

"You have to find it. No one else can find it for you." - Bjorn Borg

SVP
Joined: 05 Jul 2006
Posts: 1747
Followers: 6

Kudos [?]: 358 [0], given: 49

### Show Tags

10 Oct 2008, 10:35
(n-1)(n)(n+1) are 3 consecutives ,

24 = 2^3*3

from 1

if n is not dev by 2 thus

n-1, n+1 are even ( 2,3,4) ( 4,5,6) (6,7,8)

8/24 r = 8 , r = 0 , r = 2

from 2

(1,2,3) ( 3,4,5) 0r ( 4,5,6)

r = 4 or 15 or 0 insuff

both together

(4,5,6) and 6,7,8 sutisfies 1,2 however yeild r = 0

Thanks Bruce for the wake up call i owe u one

Last edited by yezz on 10 Oct 2008, 11:05, edited 2 times in total.
VP
Joined: 30 Jun 2008
Posts: 1034
Followers: 14

Kudos [?]: 613 [0], given: 1

### Show Tags

10 Oct 2008, 10:47
yezz wrote:
(n-1)(n)(n+1) are 3 consecutives ,

24 = 2^3*3

from 1

if n is not dev by 2 thus

n-1, n+1 are even ( 2,3,4) ( 4,5,6) (6,7,8)

24/24 r = 0 , 120/24 r = 5 , r = 14
from 2

(1,2,3) ( 3,4,5) 0r ( 4,5,6)

r = 7 or 5/2 or 5 insuff

both together

(4,5,6) and 6,7,8 sutisfies 1,2 however yeild different r

E

I think you misread the problem Yezz. There is no "n" in the question.
_________________

"You have to find it. No one else can find it for you." - Bjorn Borg

Senior Manager
Joined: 21 Apr 2008
Posts: 269
Location: Motortown
Followers: 2

Kudos [?]: 150 [1] , given: 0

### Show Tags

10 Oct 2008, 16:09
1
KUDOS
(n^2 -1) = 24x + R

1. n is not divisible by 2
N is odd

To satisfy the equation, n should be atleast 5 with R = 0
n = 5 -> R = 0
n = 7 -> R = 0
n = 9 -> R = 8
Not Sufficient

2. n is not divisible by 3
N is not 3,6,9,12...

To satisfy the equation, n should be atleast 5 with R = 0
n = 5 -> R = 0
n = 7 -> R = 0
n = 8 -> R = 15
Not Sufficient

Together:
Intersection of {5,7,9,11,13,15,17...} and {5,7,8,10,11,13,17....}
{5,7,11,13,17......}

With each integer, R = 0

VP
Joined: 30 Jun 2008
Posts: 1034
Followers: 14

Kudos [?]: 613 [0], given: 1

### Show Tags

10 Oct 2008, 19:16
LiveStronger wrote:
(n^2 -1) = 24x + R

1. n is not divisible by 2
N is odd

To satisfy the equation, n should be atleast 5 with R = 0
n = 5 -> R = 0
n = 7 -> R = 0
n = 9 -> R = 8
Not Sufficient

2. n is not divisible by 3
N is not 3,6,9,12...

To satisfy the equation, n should be atleast 5 with R = 0
n = 5 -> R = 0
n = 7 -> R = 0
n = 8 -> R = 15
Not Sufficient

Together:
Intersection of {5,7,9,11,13,15,17...} and {5,7,8,10,11,13,17....}
{5,7,11,13,17......}

With each integer, R = 0

Thank you LiveStronger +1 for you
_________________

"You have to find it. No one else can find it for you." - Bjorn Borg

Re: DS : Reminder   [#permalink] 10 Oct 2008, 19:16
Display posts from previous: Sort by