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

It is currently 31 Aug 2015, 20:10
GMAT Club Tests

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

If s > 0 and (r/s)^1/2=s, what what is r in terms of s ?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 02 Dec 2012
Posts: 178
Followers: 3

Kudos [?]: 981 [0], given: 0

If s > 0 and (r/s)^1/2=s, what what is r in terms of s ? [#permalink] New post 12 Dec 2012, 07:32
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (01:29) correct 9% (00:54) wrong based on 376 sessions
If s > 0 and \(\sqrt{\frac{r}{s}}=s\), what is r in terms of s ?

(A) 1/s
(B) \(\sqrt{s}\)
(C) \(s\sqrt{s}\)
(D) s^3
(E) s^2-s
[Reveal] Spoiler: OA
Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 29170
Followers: 4734

Kudos [?]: 49931 [1] , given: 7511

Re: If s > 0 and (r/s)^1/2=s, what what is r in terms of s ? [#permalink] New post 12 Dec 2012, 07:33
1
This post received
KUDOS
Expert's post
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 09 Sep 2013
Posts: 6141
Followers: 342

Kudos [?]: 70 [0], given: 0

Premium Member
Re: If s > 0 and (r/s)^1/2=s, what what is r in terms of s ? [#permalink] New post 24 Jan 2015, 16:59
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

Expert Post
EMPOWERgmat Instructor
User avatar
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 3465
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: 340 Q170 V170
Followers: 148

Kudos [?]: 932 [0], given: 57

Re: If s > 0 and (r/s)^1/2=s, what what is r in terms of s ? [#permalink] New post 24 Jan 2015, 18:05
Expert's post
Hi All,

This question can be solved by TESTing VALUES. The key is to keep the values relatively small and think about how the square root sign impacts the math:

We're told that S > 0 and (r/s)^1/2=s

We're asked for the value of R.

IF....
R = 8
S = 2
\sqrt{4} = 2

So we're looking for an answer that = 8 when S = 2....

Answer A: 1/2 NOT a match
Answer B: \sqrt{2} NOT a match
Answer C: 2\sqrt{2} NOT a match
Answer D: 2^3 = 8 This IS a MATCH
Answer E: 2^2 - 2 = 2 NOT a match

Final Answer:
[Reveal] Spoiler:
D


GMAT assassins aren't born, they're made,
Rich
_________________

Official Guide 2016 Question Breakdown:
http://gmatclub.com/forum/empowergmat-blog-198415.html#p1527977

Rich Cohen
Rich.C@empowergmat.com
http://www.empowergmat.com

GMAT Club Verified Reviews for EMPOWERgmat & Special Discount

EMPOWERgmat Podcast - A Wild Secret About The GMAT Algorithm


Re: If s > 0 and (r/s)^1/2=s, what what is r in terms of s ?   [#permalink] 24 Jan 2015, 18:05
    Similar topics Author Replies Last post
Similar
Topics:
12 Experts publish their posts in the topic What is the largest integer n such that 1/2^n > 0 ? Bunuel 10 10 Feb 2014, 23:45
2 Experts publish their posts in the topic If p/3 = r/2 and r = 0.75s, what is the ratio of p to r to s mattce 3 07 Jul 2013, 20:59
4 Experts publish their posts in the topic What is the largest integer n such that 1/2^n > 0.001? bfman 12 04 Jul 2010, 17:52
If m > 0 and x is m percent of y, then, in terms of m, y is what perce marcusaurelius 5 02 May 2010, 13:00
4 Experts publish their posts in the topic If m > 0 and x is m percent of y, then, in terms of m, y is what perce nfa1rhp 5 22 Jul 2007, 15:01
Display posts from previous: Sort by

If s > 0 and (r/s)^1/2=s, what what is r in terms of s ?

  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®.