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

It is currently 30 Jul 2014, 01:27

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

For which of the following expressions would the value be

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 17 Sep 2011
Posts: 209
Followers: 0

Kudos [?]: 18 [0], given: 8

GMAT Tests User
For which of the following expressions would the value be [#permalink] New post 01 Feb 2012, 19:05
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

86% (01:58) correct 14% (01:35) wrong based on 43 sessions
For which of the following expressions would the value be greater if 160 were replaced by 120 ?

A) 1000- 160

B) 160/(1+160)

C) 1/(1-1/160)

The answer choices are listed below

1) None
2) A only
3) C only
4) A & B
5) A & C

Could please provide a solution to this problem ?
_________________

_________________
Giving +1 kudos is a better way of saying 'Thank You'.

Intern
Intern
avatar
Joined: 04 Mar 2011
Posts: 19
Followers: 0

Kudos [?]: 4 [0], given: 0

Re: For which of the following expressions would the value be gr [#permalink] New post 01 Feb 2012, 21:05
answer should be A & C

a) 1000-160 = 840 vs 1000-120 = 880 so it is higher

b) 160/161 is bigger than 120/121

c) 1/(1-1/160) vs 1/(1-1/120) you really dont need to work it out

you can compare the 1-1/160 vs the 1-1/120 the 1/120 will reduce it more than the 1/160 since its a larger number but it is at the bottom of a fraction so it will make the value bigger overall.
Intern
Intern
avatar
Joined: 31 Jan 2012
Posts: 6
Concentration: Finance, Economics
GPA: 2.98
Followers: 0

Kudos [?]: 5 [0], given: 0

Re: For which of the following expressions would the value be [#permalink] New post 03 Mar 2012, 00:47
I am getting "A only." Because doesn't 1/(1-1/160) put 0 in the denominator which cannot happen?
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18824
Followers: 3264

Kudos [?]: 22753 [0], given: 2646

Re: For which of the following expressions would the value be [#permalink] New post 03 Mar 2012, 00:52
Expert's post
Mercury14 wrote:
I am getting "A only." Because doesn't 1/(1-1/160) put 0 in the denominator which cannot happen?


It's \frac{1}{1-\frac{1}{160}}. On the GMAT you won't see a denominator equal to zero, since the division by zero is not allowed.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Intern
Intern
avatar
Joined: 31 Jan 2012
Posts: 6
Concentration: Finance, Economics
GPA: 2.98
Followers: 0

Kudos [?]: 5 [0], given: 0

Re: For which of the following expressions would the value be [#permalink] New post 03 Mar 2012, 01:01
Oh ok. Thanks. I wasn't looking at it that way.
SVP
SVP
User avatar
Joined: 09 Sep 2013
Posts: 1808
Followers: 167

Kudos [?]: 33 [0], given: 0

Premium Member
Re: For which of the following expressions would the value be [#permalink] New post 16 Jun 2014, 02:01
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Re: For which of the following expressions would the value be   [#permalink] 16 Jun 2014, 02:01
    Similar topics Author Replies Last post
Similar
Topics:
Which of the following expressions is defined for all HVD1975 8 06 Sep 2008, 09:31
Which of the following expressions can be written as an KillerSquirrel 3 12 Oct 2007, 00:40
Which of the following expressions is defined for all ggarr 2 31 May 2007, 23:37
Which of the following expressions is defined for all Hermione 6 29 Oct 2006, 09:28
Which of the following expression is defined for all mdf2 2 26 Jan 2005, 22:04
Display posts from previous: Sort by

For which of the following expressions would the value be

  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®.