Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 18 May 2013, 03:43
Customize  |  Hide

Search
Register
New posts
Unanswered

If 10^(50) - 74 is written as an integer in base 10

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Senior Manager
Senior Manager
Joined: 08 Aug 2005
Posts: 261
Followers: 1

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

GMAT Tests User
If 10^(50) - 74 is written as an integer in base 10 [#permalink] New post 05 May 2006, 23:18
If 10^(50) - 74 is written as an integer in base 10 notation, what
is the sum of the digits in that integer.

A. 424
B. 433
C. 440
D. 449
E. 467
VP
VP
User avatar
Joined: 29 Dec 2005
Posts: 1356
Followers: 6

Kudos [?]: 17 [0], given: 0

GMAT Tests User
Re: sum of the digits [#permalink] New post 16 May 2006, 13:40
getzgetzu wrote:
If 10^(50) - 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer.

A. 424
B. 433
C. 440
D. 449
E. 467

10^2-74 = 26
10^3-74 = 926 = one (3-2) 9's
10^4-74 = 9926 = two (4-2) 9's
.
.
.
.
.
.
10^50-74 = 9999....9926 = forty-eight (50-2) 9's

sum = 48 x 9 + 26 = 458 :roll: :roll:
Manager
Manager
Joined: 07 Sep 2004
Posts: 62
Followers: 1

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

 [#permalink] New post 17 May 2006, 05:14
Agree with the reasoning

there are 48 of a nine
there is a 2
there is a 6

so sum = 48*9 + 2+ 6 = 440
CEO
CEO
User avatar
Joined: 20 Nov 2005
Posts: 2934
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 7

Kudos [?]: 37 [0], given: 0

GMAT Tests User
 [#permalink] New post 17 May 2006, 07:09
10^50 -74 = 9999..........26. There are 48 9's and 2 and 6.

Sum of digits = 9*48 +2+6 = 440
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

VP
VP
User avatar
Joined: 29 Dec 2005
Posts: 1356
Followers: 6

Kudos [?]: 17 [0], given: 0

GMAT Tests User
Re: sum of the digits [#permalink] New post 17 May 2006, 11:25
getzgetzu wrote:
If 10^(50) - 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer.

A. 424
B. 433
C. 440
D. 449
E. 467

10^2-74 = 26
10^3-74 = 926 = one (3-2) 9's
10^4-74 = 9926 = two (4-2) 9's
.
.
.
.
.
.
10^50-74 = 9999....9926 = forty-eight (50-2) 9's
sum = 48 x 9 + 2+6 = 440

ufffffffffffffffffff
Director
Director
User avatar
Joined: 10 Oct 2005
Posts: 732
Location: Madrid
Followers: 3

Kudos [?]: 10 [0], given: 0

GMAT Tests User
 [#permalink] New post 17 May 2006, 12:01
ps_dahiya wrote:
10^50 -74 = 9999..........26. There are 48 9's and 2 and 6.

Sum of digits = 9*48 +2+6 = 440
same approach but silly mistake in calculations :oops:
_________________

IE IMBA 2010

  [#permalink] 17 May 2006, 12:01
    Similar topics Author Replies Last post
Similar
Topics:
 New posts If 10^50 - 74 is written as an integer in base 10 notation, rthothad 4 30 Jun 2005, 19:32
New posts If 10^50 74 is written as an integer in base 10 notation, positive_energy 3 01 Aug 2006, 11:54
New posts If 10^50 74 is written as an integer in base 10 notation, yezz 3 21 Sep 2006, 10:38
New posts 3 EXPERTS_POSTS_IN_THIS_TOPIC If 10^50 - 74 is written as an integer in base 10 notation minnu 7 24 Aug 2007, 08:04
New posts 2 If 10^50 74 is written as an integer in base 10 notation, chenhong1224 5 17 Oct 2008, 09:08
Display posts from previous: Sort by

If 10^(50) - 74 is written as an integer in base 10

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma

Search for:


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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com