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

 It is currently 07 May 2015, 02:09

### 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

# How many numbers of 'n' digits can be formed from the

Author Message
TAGS:
Senior Manager
Joined: 30 Aug 2003
Posts: 330
Location: BACARDIVILLE
Followers: 1

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

How many numbers of 'n' digits can be formed from the [#permalink]  13 Mar 2004, 15:53
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
How many numbers of 'n' digits can be formed from the nonzero digits in which no two consecutive digits are the same?

n^9
9^n
9*8^(n-1)
8^n
None of the above
_________________

Pls include reasoning along with all answer posts.
****GMAT Loco****
Este examen me conduce jodiendo loco

Senior Manager
Joined: 02 Mar 2004
Posts: 329
Location: There
Followers: 1

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

9*8^(n-1)

The rightmost slot can be filled with 9 different digits, the next to it with 8 digits. Repeat the same for all slots.
Similar topics Replies Last post
Similar
Topics:
4 How many three digit even numbers N can be formed that are divisible 1 04 Sep 2014, 13:10
10 How many five-digit numbers can be formed from the digits 0, 12 25 Jan 2014, 22:54
How many five digit numbers can be formed? 1 04 Jun 2011, 03:17
How many 5-digit numbers can be formed from the digits 5 11 Nov 2007, 03:53
How many numbers of 7 digits can be formed from the digits 3 10 Aug 2007, 03:23
Display posts from previous: Sort by