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

 It is currently 24 Mar 2017, 12:59

### 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

# n is an integer. Is n&#9516;&#9619;1 evenly divisible by 8?

Author Message
SVP
Joined: 03 Feb 2003
Posts: 1603
Followers: 9

Kudos [?]: 252 [0], given: 0

n is an integer. Is n&#9516;&#9619;1 evenly divisible by 8? [#permalink]

### Show Tags

04 Oct 2003, 08:11
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.

n is an integer. Is n┬▓–1 evenly divisible by 8?

(1) n┬▓–1 is evenly divisible by 2
(2) n–1 is even
Manager
Joined: 26 Aug 2003
Posts: 233
Location: United States
Followers: 1

Kudos [?]: 13 [0], given: 0

### Show Tags

05 Oct 2003, 06:05
Wait, why can't (2) also give you the answer?

For example:
n = 1, (n^2 - 1) % 8 = 0
n = 3, (n^2 - 1) % 8 = 8 % 8 = 0
n = 5, (n^2 - 1) % 8 = 24 % 8 = 0
n = 7, (n^2 - 1) % 8 = 48 % 8 = 0
n = 9, (n^2 - 1) % 8 = 80 % 8 = 0
SVP
Joined: 03 Feb 2003
Posts: 1603
Followers: 9

Kudos [?]: 252 [0], given: 0

### Show Tags

05 Oct 2003, 22:10
Let's discuss (2):
n┬▓–1=(n+1)(n-1)
n is odd, so (n+1) and (n-1) are consequtive even integers, their produst is evenly divisible by 8

Sorry, D is right
05 Oct 2003, 22:10
Display posts from previous: Sort by