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

It is currently 28 Aug 2014, 19:30

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

ds - hard

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
VP
VP
avatar
Joined: 22 Nov 2007
Posts: 1102
Followers: 6

Kudos [?]: 118 [0], given: 0

GMAT Tests User
ds - hard [#permalink] New post 10 Dec 2007, 05:21
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
If n is a positive integer, what is the tens digit of n?

1. the hundreds digit of 10n is 6
2. the tens digit of n+1 is 7
Intern
Intern
avatar
Joined: 13 Jun 2007
Posts: 48
Followers: 1

Kudos [?]: 3 [0], given: 0

 [#permalink] New post 10 Dec 2007, 06:26
A

assume the integer n=abc where a is the hundreds, b is the tens, c is first digit. We are trying to find b
(i) 10n=abc0 so b=6 as the information tells us

(ii) if n+1 then b=7. But this depends on if c=9 or not.
  [#permalink] 10 Dec 2007, 06:26
    Similar topics Author Replies Last post
Similar
Topics:
2 Hard DS: Two russian mathematicians PTK 13 27 Aug 2010, 08:58
Experts publish their posts in the topic very hard ds question aliensoybean 5 14 Dec 2007, 23:25
HARD DS speed problem danielwaugh 12 01 Oct 2007, 21:35
GmatPrep: hard DS EconGirl 8 28 Sep 2006, 15:06
HARD DS Number Properties:( jamesrwright3 3 06 Aug 2006, 14:37
Display posts from previous: Sort by

ds - hard

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

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®.