When n = 100x + 10y + z, function f is defined as f(n) = : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 20:36

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# When n = 100x + 10y + z, function f is defined as f(n) =

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Current Student
Joined: 31 Aug 2007
Posts: 369
Followers: 1

Kudos [?]: 127 [0], given: 1

When n = 100x + 10y + z, function f is defined as f(n) = [#permalink]

### Show Tags

22 Apr 2008, 15:17
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.

When n = 100x + 10y + z, function f is defined as f(n) = (2^x)(3^y)(5^z). If f(v) = 9f(u), what is v minus u?
Current Student
Joined: 28 Dec 2004
Posts: 3384
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 15

Kudos [?]: 282 [1] , given: 2

Re: PS function [#permalink]

### Show Tags

22 Apr 2008, 19:05
1
This post received
KUDOS
young_gun wrote:
When n = 100x + 10y + z, function f is defined as f(n) = (2^x)(3^y)(5^z). If f(v) = 9f(u), what is v minus u?

i get 20 as well..

basically..

100x...+ 10y....+z

2^x 3^y 5^z

9*f(u)=3^2f(u).. => 2^x*100 +3^(Y+2)*10 + 5^z - [f(u)=2^100x+3^y*10+5^z]..basically all terms cancel except for (Y+2)10=the y cancels out..leaving behind 20..
Current Student
Joined: 31 Aug 2007
Posts: 369
Followers: 1

Kudos [?]: 127 [0], given: 1

Re: PS function [#permalink]

### Show Tags

23 Apr 2008, 05:53
fresinha12 wrote:
young_gun wrote:
When n = 100x + 10y + z, function f is defined as f(n) = (2^x)(3^y)(5^z). If f(v) = 9f(u), what is v minus u?

i get 20 as well..

basically..

100x...+ 10y....+z

2^x 3^y 5^z

9*f(u)=3^2f(u).. => 2^x*100 +3^(Y+2)*10 + 5^z - [f(u)=2^100x+3^y*10+5^z]..basically all terms cancel except for (Y+2)10=the y cancels out..leaving behind 20..

thanks for the explanation, +1.
Re: PS function   [#permalink] 23 Apr 2008, 05:53
Display posts from previous: Sort by

# When n = 100x + 10y + z, function f is defined as f(n) =

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.