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

It is currently 21 Nov 2018, 10:09

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 November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • All GMAT Club Tests are Free and open on November 22nd in celebration of Thanksgiving Day!

     November 22, 2018

     November 22, 2018

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open November 22nd to celebrate Thanksgiving Day! Access will be available from 0:01 AM to 11:59 PM, Pacific Time (USA)
  • Key Strategies to Master GMAT SC

     November 24, 2018

     November 24, 2018

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

If 1/x = 0.25^(1/2), what does x equal?

  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: 50730
If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 04 Mar 2018, 22:20
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

90% (00:38) correct 10% (00:38) wrong based on 78 sessions

HideShow timer Statistics

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50730
Re: If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 04 Mar 2018, 22:50
Bunuel wrote:
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20


7. Algebra



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

Senior PS Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 3313
Location: India
GPA: 3.12
Premium Member CAT Tests
If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 05 Mar 2018, 04:52
Bunuel wrote:
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20



Given: \(\frac{1}{x} = \sqrt{0.25}\)

Squaring on both sides, we get \(\frac{1}{x^2} = 0.25\) -> \(x^2 = \frac{1}{0.25} = \frac{100}{25} = 4\)

Therefore, x = \(\sqrt{4}\) = 2(Option C)
_________________

You've got what it takes, but it will take everything you've got

Board of Directors
User avatar
P
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4232
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User Premium Member CAT Tests
Re: If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 05 Mar 2018, 05:54
Bunuel wrote:
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20

\(\frac{1}{x} = \sqrt{0.25}\)

Or, \(\frac{1}{x} = \sqrt{\frac{25}{100}}\)

Or, \(\frac{1}{x} = \frac{5}{10}\)

So, \(\frac{1}{x} = 0.50\), Answer must be (B)
_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 06 Mar 2018, 10:21
Bunuel wrote:
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20


We can solve for x:

1/x = √0.25

1/x = 0.5

1 = 0.5x

1/0.5 = x

2 = x

Answer: C
_________________

Jeffery Miller
Head of GMAT Instruction

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

Director
Director
avatar
G
Joined: 21 May 2013
Posts: 653
Re: If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 06 Mar 2018, 10:47
Abhishek009 wrote:
Bunuel wrote:
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20

\(\frac{1}{x} = \sqrt{0.25}\)

Or, \(\frac{1}{x} = \sqrt{\frac{25}{100}}\)

Or, \(\frac{1}{x} = \frac{5}{10}\)

So, \(\frac{1}{x} = 0.50\), Answer must be (B)



Answer must be C not B
1/x^2=25/100
1/x=1/2
x=2
Board of Directors
User avatar
V
Status: Stepping into my 10 years long dream
Joined: 18 Jul 2015
Posts: 3616
Premium Member Reviews Badge
Re: If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 06 Mar 2018, 10:56
Abhishek009 wrote:
\(\frac{1}{x} = \sqrt{0.25}\)

Or, \(\frac{1}{x} = \sqrt{\frac{25}{100}}\)

Or, \(\frac{1}{x} = \frac{5}{10}\)

So, \(\frac{1}{x} = 0.50\), Answer must be (B)


Hey Abhishek009 ,

You did everything correct but the last step.

We are asked to determine x not 1/x. Hence, answer must be 2 i.e
C :)
_________________

My GMAT Story: From V21 to V40
My MBA Journey: My 10 years long MBA Dream
My Secret Hacks: Best way to use GMATClub | Importance of an Error Log!
Verbal Resources: All SC Resources at one place | All CR Resources at one place
Blog: Subscribe to Question of the Day Blog
GMAT Club Inbuilt Error Log Functionality - View More.
New Visa Forum - Ask all your Visa Related Questions - here.
New! Best Reply Functionality on GMAT Club!
Find a bug in the new email templates and get rewarded with 2 weeks of GMATClub Tests for free
Check our new About Us Page here.

Board of Directors
User avatar
P
Joined: 17 Jul 2014
Posts: 2644
Location: United States (IL)
Concentration: Finance, Economics
GMAT 1: 650 Q49 V30
GPA: 3.92
WE: General Management (Transportation)
GMAT ToolKit User Premium Member Reviews Badge
Re: If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 06 Mar 2018, 11:06
0.25 = 1/4
^ 1/2 = sqrt(everything that is raised to this power)
(1/2)^1/2 = sqrt(1/4) = 1/2
1/x = 1/2
x=2
VP
VP
User avatar
V
Status: It's near - I can see.
Joined: 13 Apr 2013
Posts: 1317
Location: India
Concentration: International Business, Operations
GMAT 1: 480 Q38 V22
GPA: 3.01
WE: Engineering (Consulting)
Premium Member Reviews Badge CAT Tests
If 1/x = 0.25^(1/2), what does x equal?  [#permalink]

Show Tags

New post 11 Mar 2018, 03:54
Bunuel wrote:
If \(\frac{1}{x} = \sqrt{0.25}\), what does x equal?


(A) 0.2
(B) 0.5
(C) 2
(D) 5
(E) 20


Given: \(\frac{1}{x} = \sqrt{0.25}\)

Question : x =?

\(\frac{1}{x^2}\) = \(\frac{25}{100}\)

\(\frac{1}{x^2}\) = \(\frac{1}{4}\)

\(x^2\)= 4

x =\(\sqrt{4}\)

x = 2

(C)
_________________

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

GMAT Club Bot
If 1/x = 0.25^(1/2), what does x equal? &nbs [#permalink] 11 Mar 2018, 03:54
Display posts from previous: Sort by

If 1/x = 0.25^(1/2), what does x equal?

  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®.