It is currently 24 Oct 2020, 09:49
My 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.

sqrt75 - sqrt27

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Founder
Founder
User avatar
Joined: 18 Apr 2015
Posts: 13671
Followers: 305

Kudos [?]: 3525 [0], given: 12607

CAT Tests
sqrt75 - sqrt27 [#permalink] New post 23 Jan 2018, 14:48
Expert's post
00:00

Question Stats:

81% (00:41) correct 18% (00:37) wrong based on 32 sessions


Quantity A
Quantity B
\(\sqrt{75} - \sqrt{27}\)
\(\sqrt{10}\)


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.

Kudos for right answer and explanation
[Reveal] Spoiler: OA

_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.
Eddie Van Halen - Beat it R.I.P.

1 KUDOS received
Manager
Manager
Joined: 02 Jan 2018
Posts: 66
Followers: 0

Kudos [?]: 35 [1] , given: 0

Re: sqrt75 - sqrt27 [#permalink] New post 24 Jan 2018, 02:46
1
This post received
KUDOS
Quantity A is greater
As \sqrt{75}-\sqrt{27}
2\sqrt{3}
3.464

Whereas \sqrt{10} <3.4
Founder
Founder
User avatar
Joined: 18 Apr 2015
Posts: 13671
Followers: 305

Kudos [?]: 3525 [0], given: 12607

CAT Tests
Re: sqrt75 - sqrt27 [#permalink] New post 24 Jan 2018, 03:47
Expert's post
wrap them up with the m code.

regards
_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.
Eddie Van Halen - Beat it R.I.P.

1 KUDOS received
Intern
Intern
Joined: 18 May 2016
Posts: 35
Followers: 0

Kudos [?]: 24 [1] , given: 13

Re: sqrt75 - sqrt27 [#permalink] New post 24 Jan 2018, 10:51
1
This post received
KUDOS
Quantity A should be bigger:
A can be rewritten to sqr(3)*2 which is approximately 3.5 (I try to memorize square roots up to 10) while Quantity B is approximately 3.
-->Answer A
Intern
Intern
Joined: 24 Jan 2018
Posts: 31
Followers: 0

Kudos [?]: 4 [0], given: 8

Re: sqrt75 - sqrt27 [#permalink] New post 26 Jan 2018, 11:59
A
1 KUDOS received
VP
VP
Joined: 20 Apr 2016
Posts: 1302
WE: Engineering (Energy and Utilities)
Followers: 22

Kudos [?]: 1329 [1] , given: 251

Re: sqrt75 - sqrt27 [#permalink] New post 27 Jan 2018, 04:03
1
This post received
KUDOS
Carcass wrote:


Quantity A
Quantity B
\(\sqrt{75} - \sqrt{27}\)
\(\sqrt{10}\)


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.



Here
Qty A

\(\sqrt{75} - \sqrt{27}\)

=\(5\sqrt{3}\) - \(3\sqrt{3}\)
=\(2\sqrt{3}\)
nearly = 3.4 (since \(\sqrt{3}\) = 1.728)

Now for Qty B

\(\sqrt{10}\)
we know 9 is the nearest sq value to 10

so square root of 9 = 3

and so square root of 10 = nearly close to 3

Hence qty A> QTy B.

It will be benefit if we know the square root value atleast till 5
_________________

If you found this post useful, please let me know by pressing the Kudos Button


Rules for Posting

Got 20 Kudos? You can get Free GRE Prep Club Tests

GRE Prep Club Members of the Month:TOP 10 members of the month with highest kudos receive access to 3 months GRE Prep Club tests

Manager
Manager
Joined: 29 Nov 2017
Posts: 190
Location: United States
GRE 1: Q142 V146
WE: Information Technology (Computer Software)
Followers: 1

Kudos [?]: 94 [0], given: 99

Re: sqrt75 - sqrt27 [#permalink] New post 17 May 2018, 23:59
I used a banal way of solving the problem , I used the dreaded calculator got the answer in 50 sec. its A
Re: sqrt75 - sqrt27   [#permalink] 17 May 2018, 23:59
Display posts from previous: Sort by

sqrt75 - sqrt27

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.