It is currently 12 Dec 2017, 19:40

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Which of the following is the closest approximation to

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Manager
Manager
User avatar
G
Joined: 07 Jun 2017
Posts: 177

Kudos [?]: 101 [0], given: 59

Location: India
Concentration: Technology, General Management
GMAT 1: 660 Q46 V38
GPA: 3.6
WE: Information Technology (Computer Software)
GMAT ToolKit User
Which of the following is the closest approximation to [#permalink]

Show Tags

New post 26 Oct 2017, 21:37
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

46% (00:52) correct 54% (01:58) wrong based on 46 sessions

HideShow timer Statistics

Which of the following is the closest approximation to \([\sqrt{73} * \sqrt{239}] ÷ [\sqrt{7.2} + \sqrt{15.7}]\)?

A. 10
B. 15
C. 20
D. 25
E. 30
[Reveal] Spoiler: OA

_________________

Regards,
Naveen
email: nkmungila@gmail.com
Please press kudos if you like this post

Kudos [?]: 101 [0], given: 59

Intern
Intern
avatar
B
Joined: 18 Jun 2017
Posts: 36

Kudos [?]: 7 [0], given: 27

GMAT 1: 660 Q39 V40
GMAT ToolKit User
Which of the following is the closest approximation to [#permalink]

Show Tags

New post 27 Oct 2017, 00:51
73 is some number between 8^2 and 9^2. Since it is closer to 64, lets take its square root as 8.
239 is close to 225 which has a square root of 15. Hence lets take it as 15.

15x8 = 120

Square root of 7.2 is some number between 2 and 3 since 2^2 is 4 and 3^2 is 9. Assume it to be 2.
Square root of 15.7 is some number slightly less than 4, since 4^2 = 16. Hence take it to be 4.

4+2 = 6

Therefore 120/6 = 20

Answer: C

Kudos [?]: 7 [0], given: 27

Which of the following is the closest approximation to   [#permalink] 27 Oct 2017, 00:51
Display posts from previous: Sort by

Which of the following is the closest approximation to

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.