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

It is currently 24 Apr 2019, 21:03

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

What is the sum of the unique prime factors of 384?

  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: 54496
What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 30 Aug 2017, 23:20
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

86% (01:04) correct 14% (01:04) wrong based on 94 sessions

HideShow timer Statistics

Current Student
User avatar
P
Joined: 18 Aug 2016
Posts: 619
Concentration: Strategy, Technology
GMAT 1: 630 Q47 V29
GMAT 2: 740 Q51 V38
GMAT ToolKit User Reviews Badge
Re: What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 30 Aug 2017, 23:32
Bunuel wrote:
What is the sum of the unique prime factors of 384?

A. 5
B. 10
C. 17
D. 24
E. 29


2*2*3*3*3*3

2+3 = 5
A
_________________
We must try to achieve the best within us


Thanks
Luckisnoexcuse
Senior Manager
Senior Manager
User avatar
P
Joined: 07 Jul 2012
Posts: 376
Location: India
Concentration: Finance, Accounting
GPA: 3.5
Premium Member
Re: What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 30 Aug 2017, 23:54
1
Prime Factors of 384 are: 2*2*3*3*3*3
There are two unique prime factors: 2,3
Sum of Unique prime factors= 2+3=5

Answer: A.

Kudos please if you like my explanation!
_________________
Kindly hit kudos if my post helps!
Senior PS Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 3386
Location: India
GPA: 3.12
Re: What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 31 Aug 2017, 00:37
Bunuel wrote:
What is the sum of the unique prime factors of 384?

A. 5
B. 10
C. 17
D. 24
E. 29


384 when prime factorized gives us 2^7 * 3
There are 2 prime factors in this number 2 and 3.

Therefore, the sum of the unique prime factors must be 2+3 = 5(Option A)

_________________
You've got what it takes, but it will take everything you've got
Senior Manager
Senior Manager
User avatar
P
Joined: 29 Jun 2017
Posts: 454
GPA: 4
WE: Engineering (Transportation)
GMAT ToolKit User Reviews Badge
Re: What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 31 Aug 2017, 01:18
Ans is A
384= 2^7 x 3
Sum = 2+3 =5
_________________
Give Kudos for correct answer and/or if you like the solution.
Intern
Intern
avatar
B
Joined: 19 Sep 2016
Posts: 35
Re: What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 31 Aug 2017, 10:09
5 as factorization of 384 is 2^8*3^1 so 2+3=5 as it says sum of unique prime factors

Sent from my SM-N920G using GMAT Club Forum mobile app
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2825
Re: What is the sum of the unique prime factors of 384?  [#permalink]

Show Tags

New post 02 Sep 2017, 07:23
Bunuel wrote:
What is the sum of the unique prime factors of 384?

A. 5
B. 10
C. 17
D. 24
E. 29


384 = 4 x 96 = 4 x 48 x 2 = 2^7 x 3

So, the sum of the unique prime factors is 2 + 3 = 5.

Answer: A
_________________

Jeffrey Miller

Head of GMAT Instruction

Jeff@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

GMAT Club Bot
Re: What is the sum of the unique prime factors of 384?   [#permalink] 02 Sep 2017, 07:23
Display posts from previous: Sort by

What is the sum of the unique prime factors of 384?

  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®.