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

It is currently 20 Jun 2018, 21:38

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

What is the decimal equivalent of (1/5)^2 ?

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

Hide Tags

Top Contributor
1 KUDOS received
Board of Directors
User avatar
P
Joined: 01 Sep 2010
Posts: 3423
What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post Updated on: 21 May 2017, 08:50
1
Top Contributor
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

80% (00:35) correct 20% (00:44) wrong based on 99 sessions

HideShow timer Statistics


Originally posted by carcass on 21 May 2017, 08:45.
Last edited by Bunuel on 21 May 2017, 08:50, edited 1 time in total.
Renamed the topic.
Expert Post
2 KUDOS received
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 46213
Re: What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 21 May 2017, 08:53
2
3
Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 46213
Re: What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 21 May 2017, 08:53
Bunuel wrote:
carcass wrote:
What is the decimal equivalent of \((\frac{1}{5})^5\) ?

A) 0.00032

B) 0.0016

C) 0.00625

D) 0.008

E) 0.03125



\((\frac{1}{5})^5=(\frac{2}{10})^5=(\frac{32}{10^5})=0.00032\).

Answer: A.


Similar question: https://gmatclub.com/forum/what-is-the- ... 23591.html
_________________

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

Director
Director
User avatar
G
Joined: 09 Mar 2016
Posts: 605
Re: What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 11 Mar 2018, 13:10
Bunuel wrote:
carcass wrote:
What is the decimal equivalent of \((\frac{1}{5})^5\) ?

A) 0.00032

B) 0.0016

C) 0.00625

D) 0.008

E) 0.03125



\((\frac{1}{5})^5=(\frac{2}{10})^5=(\frac{32}{10^5})=0.00032\).

Answer: A.


how did you got 32 in numerator ? :?
1 KUDOS received
BSchool Forum Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 2831
Location: India
GPA: 3.12
Premium Member
Re: What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 11 Mar 2018, 13:22
1
dave13 wrote:
Bunuel wrote:
carcass wrote:
What is the decimal equivalent of \((\frac{1}{5})^5\) ?

A) 0.00032

B) 0.0016

C) 0.00625

D) 0.008

E) 0.03125



\((\frac{1}{5})^5=(\frac{2}{10})^5=(\frac{32}{10^5})=0.00032\).

Answer: A.


how did you got 32 in numerator ? :?


Hi dave13

Formula: \((\frac{a}{b})^n = \frac{a^n}{b^n}\)

Here, \((\frac{2}{10})^5 = \frac{2^5}{10^5} = \frac{32}{100000} = 0.00032\)

Hope that helps you!
_________________

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

1 KUDOS received
Senior Manager
Senior Manager
User avatar
G
Joined: 31 May 2017
Posts: 282
CAT Tests
Re: What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 11 Mar 2018, 13:31
1
Decimal equivalent of \((1/5)^5\)?

Since we need decimal equivalent , we can start by converting value 1/5 to decimal. 1/5 is 0.20.

We need to find the value of \((0.2)^5\) , we know the value of \(2^5\) = 32 , so we should look for the value of 32 in the answer choice and include the necessary 0's after the decimal point.

Answer choice A is the only logical value here.

Ans: A
_________________

Please give kudos if it helps

Resources
Ultimate GMAT Quantitative Megathread | ALL YOU NEED FOR QUANT ! ! ! | SC Blogs by Magoosh | How to improve your verbal score | Things i wish i could've done earlier | Ultimate Q51 Guide

1 KUDOS received
SC Moderator
avatar
D
Joined: 22 May 2016
Posts: 1756
Premium Member CAT Tests
What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 11 Mar 2018, 13:53
1
dave13 wrote:
Bunuel wrote:
carcass wrote:
What is the decimal equivalent of \((\frac{1}{5})^5\) ?

A) 0.00032

B) 0.0016

C) 0.00625

D) 0.008

E) 0.03125



\((\frac{1}{5})^5=(\frac{2}{10})^5=(\frac{32}{10^5})=0.00032\).

Answer: A.


how did you got 32 in numerator ? :?

dave13 - look at the numerator and the exponent.

Does that help? :-)
_________________

In the depths of winter, I finally learned
that within me there lay an invincible summer.

-- Albert Camus, "Return to Tipasa"

Board of Directors
User avatar
G
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 3511
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User Premium Member
Re: What is the decimal equivalent of (1/5)^2 ? [#permalink]

Show Tags

New post 12 Mar 2018, 09:52
carcass wrote:
What is the decimal equivalent of \((\frac{1}{5})^5\) ?

A) 0.00032

B) 0.0016

C) 0.00625

D) 0.008

E) 0.03125


\(\frac{1}{5} = 0.2\)

No need to do decimal calculations, 2^5 = 32 , Answer will clearly be (A)
_________________

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 )

Re: What is the decimal equivalent of (1/5)^2 ?   [#permalink] 12 Mar 2018, 09:52
Display posts from previous: Sort by

What is the decimal equivalent of (1/5)^2 ?

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


cron

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®.