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

It is currently 24 Oct 2014, 13:00

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

Which of the following fractions has a decimal equivalent

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 13 Jun 2005
Posts: 253
Location: Haverhill, MA
Followers: 1

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

Which of the following fractions has a decimal equivalent [#permalink] New post 16 Jan 2006, 10:21
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Which of the following fractions has a decimal equivalent that is a terminating decimal?

A. 10/189
B.15/196
C.16/225
D.25/144
E.39/128
Director
Director
avatar
Joined: 17 Dec 2005
Posts: 555
Location: Germany
Followers: 1

Kudos [?]: 8 [0], given: 0

 [#permalink] New post 16 Jan 2006, 12:54
A and C are out because the denominators aren't even.

Left with BDE

D is 5^2 / 12^2, since 5/12 isn't a terminating decimal, I suppose the square of them aren't too.

D is out

It's E, because the denominator is a multiple of 2. (But I'm not sure, because my approach is rather unsustained. However, I guess there is no number which, if divided by 2 or a multiple of it, yields an non-terminating decimal.)

( 196 is the square of the odd number 3; I think the division by an odd number ( I used this approach also above) yields an non-terminating decimal.)
Manager
Manager
avatar
Joined: 13 Aug 2005
Posts: 136
Followers: 1

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

 [#permalink] New post 16 Jan 2006, 16:04
E.
Lets look at each fraction
a. 10/189=10*1/(3^3)*1/7 each of this simpe fractions does not lead to derminating decimal
b.15/195=15*1/13*1/13 the same thing
c. 16/225 = 16*1/5*1/5*1/9 no
d. 25/144=25*1/(3^2)*1/(2^4) 1/3 is present and does not give determinating decimal
e. 39/128=39/(2^7) Yes. 1/2 =0.5 and (0.5)^7 has the end.
  [#permalink] 16 Jan 2006, 16:04
    Similar topics Author Replies Last post
Similar
Topics:
Which of the following fractions has a decimal equivalent TOUGH GUY 14 08 Oct 2006, 09:12
Which of the following fractions has a decimal equivalent apollo168 2 23 Aug 2006, 00:33
Which of the following fractions has a decimal equivalent freetheking 3 21 Jul 2006, 19:56
Which of the following fractions has a decimal equivalent nocilis 6 04 Feb 2005, 21:42
Which of the following fractions has a decimal equivalent crackgmat04 3 08 Dec 2004, 03:22
Display posts from previous: Sort by

Which of the following fractions has a decimal equivalent

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.