GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 19 Feb 2019, 17:25

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 in February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • Free GMAT Prep Hour

     February 20, 2019

     February 20, 2019

     08:00 PM EST

     09:00 PM EST

    Strategies and techniques for approaching featured GMAT topics. Wednesday, February 20th at 8 PM EST
  • Online GMAT boot camp for FREE

     February 21, 2019

     February 21, 2019

     10:00 PM PST

     11:00 PM PST

    Kick off your 2019 GMAT prep with a free 7-day boot camp that includes free online lessons, webinars, and a full GMAT course access. Limited for the first 99 registrants! Feb. 21st until the 27th.

The square root of 24336 is exactly

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

Hide Tags

 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52971
The square root of 24336 is exactly  [#permalink]

Show Tags

New post 04 Mar 2018, 22:57
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

95% (00:20) correct 5% (00:51) wrong based on 68 sessions

HideShow timer Statistics

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52971
Re: The square root of 24336 is exactly  [#permalink]

Show Tags

New post 04 Mar 2018, 22:58
Bunuel wrote:
The square root of 24336 is exactly

(A) 152

(B) 153

(C) 155

(D) 156

(E) 158


8. Exponents and Roots of Numbers



Check below for more:
ALL YOU NEED FOR QUANT ! ! !
Ultimate GMAT Quantitative Megathread
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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?
Extra-hard Quant Tests with Brilliant Analytics

CEO
CEO
User avatar
P
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2788
Location: India
GMAT: INSIGHT
Schools: Darden '21
WE: Education (Education)
Reviews Badge
Re: The square root of 24336 is exactly  [#permalink]

Show Tags

New post 05 Mar 2018, 03:02
Bunuel wrote:
The square root of 24336 is exactly

(A) 152

(B) 153

(C) 155

(D) 156

(E) 158


The best way of answering such question lies is PRIME FACTORIZATION

\(24336 = 4*6084 = 4^2 * 1521 = 4^2*9*169 = 2^4*3^2*13^2\)

\(\sqrt{24336} = 2^2*3*13 = 156\)

Answer: option D


ALTERNATE

Out of all available options, the square of only 156 may have Unit digit 6 which the number 24336 has therefore

Answer: option D
_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

Director
Director
avatar
P
Joined: 21 May 2013
Posts: 661
Re: The square root of 24336 is exactly  [#permalink]

Show Tags

New post 05 Mar 2018, 03:06
1
Bunuel wrote:
The square root of 24336 is exactly

(A) 152

(B) 153

(C) 155

(D) 156

(E) 158



Only the square of 156 will result in unit's digit of 6
Answer D
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2827
Re: The square root of 24336 is exactly  [#permalink]

Show Tags

New post 06 Mar 2018, 10:26
Bunuel wrote:
The square root of 24336 is exactly

(A) 152

(B) 153

(C) 155

(D) 156

(E) 158


We are looking for a number that, when squared, will have a units digit of 6. Of our answer choices only 156 will have a units digit of 6 when it is squared.

Answer: D
_________________

Jeffery Miller
Head of GMAT Instruction

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Senior Manager
Senior Manager
User avatar
P
Joined: 07 Jul 2012
Posts: 376
Location: India
Concentration: Finance, Accounting
GPA: 3.5
Premium Member CAT Tests
Re: The square root of 24336 is exactly  [#permalink]

Show Tags

New post 06 Mar 2018, 17:45
Square of 6 is 6. So only option D has unit digit as 6.

Answer: D.
_________________

Kindly hit kudos if my post helps!

VP
VP
User avatar
V
Status: It's near - I can see.
Joined: 13 Apr 2013
Posts: 1400
Location: India
Concentration: International Business, Operations
Schools: INSEAD Jan '19
GMAT 1: 480 Q38 V22
GPA: 3.01
WE: Engineering (Real Estate)
Premium Member Reviews Badge
Re: The square root of 24336 is exactly  [#permalink]

Show Tags

New post 20 Mar 2018, 09:01
Bunuel wrote:
The square root of 24336 is exactly

(A) 152

(B) 153

(C) 155

(D) 156

(E) 158


Unit digit of the given number 24336 is 6, therefore we need to find an answer choice which has a unit digit as 6.

Hence (D)
_________________

"Do not watch clock; Do what it does. KEEP GOING."

GMAT Club Bot
Re: The square root of 24336 is exactly   [#permalink] 20 Mar 2018, 09:01
Display posts from previous: Sort by

The square root of 24336 is exactly

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.