Last visit was: 18 Nov 2025, 20:34 It is currently 18 Nov 2025, 20:34
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
User avatar
mbsnyc
Joined: 17 Dec 2007
Last visit: 19 Dec 2007
Posts: 8
Own Kudos:
40
 [27]
Posts: 8
Kudos: 40
 [27]
5
Kudos
Add Kudos
22
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
GMATBLACKBELT
Joined: 29 Mar 2007
Last visit: 03 Jun 2013
Posts: 1,139
Own Kudos:
1,878
 [5]
Posts: 1,139
Kudos: 1,878
 [5]
1
Kudos
Add Kudos
4
Bookmarks
Bookmark this Post
General Discussion
User avatar
Whatever
Joined: 03 Sep 2006
Last visit: 17 Jun 2008
Posts: 95
Own Kudos:
Posts: 95
Kudos: 95
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
fluke
User avatar
Retired Moderator
Joined: 20 Dec 2010
Last visit: 24 Oct 2013
Posts: 1,099
Own Kudos:
5,094
 [3]
Given Kudos: 376
Posts: 1,099
Kudos: 5,094
 [3]
1
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
MitDavidDv
What is the sum of the different positive prime factors of 550?
A. 10
B. 11
C. 15
D. 16
E. 18

\(550=275*2=25*11*2=5*5*11*2=5^2*11*2\)

Different prime numbers are 5, 11 and 2.

Sum=5+11+2=18

Ans: "E"
User avatar
MitDavidDv
Joined: 28 Jan 2011
Last visit: 02 Sep 2025
Posts: 62
Own Kudos:
Given Kudos: 76
Location: Tennessee
Concentration: MBA-Entrepreneurship
Schools:Belmont University
GPA: 3.0
Posts: 62
Kudos: 787
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Shalom!

550= 5^2+2+11=18
The prime factors are 5, 2 and 11 therefore the answer is E.
User avatar
Spidy001
Joined: 01 Feb 2011
Last visit: 16 Feb 2015
Posts: 298
Own Kudos:
Given Kudos: 42
Posts: 298
Kudos: 348
Kudos
Add Kudos
Bookmarks
Bookmark this Post
different prime factors of 550 are 2 , 5, 11

=> sum of prime factors = 2+5+11 = 18

Answer is E.
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 18 Nov 2025
Posts: 21,712
Own Kudos:
26,990
 [1]
Given Kudos: 300
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 21,712
Kudos: 26,990
 [1]
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
mbsnyc
What is the sum of the different positive prime factors of 550?

A. 10
B. 11
C. 15
D. 16
E. 18

To determine the sum of the different positive prime factors of 550, let’s break 550 into its prime factorization.

550 = 55 x 10 = 5 x 11 x 5 x 2

The different prime factors of 550 are 5, 11, and 2 and the sum of these prime factors is 5 + 11 + 2 = 18.

Answer: E
User avatar
BrushMyQuant
Joined: 05 Apr 2011
Last visit: 21 Oct 2025
Posts: 2,284
Own Kudos:
Given Kudos: 100
Status:Tutor - BrushMyQuant
Location: India
Concentration: Finance, Marketing
Schools: XLRI (A)
GMAT 1: 700 Q51 V31
GPA: 3
WE:Information Technology (Computer Software)
Expert
Expert reply
Schools: XLRI (A)
GMAT 1: 700 Q51 V31
Posts: 2,284
Kudos: 2,552
Kudos
Add Kudos
Bookmarks
Bookmark this Post
↧↧↧ Weekly Video Solution to the Problem Series ↧↧↧




We need to find the sum of the different positive prime factors of 550?

550 = \(5 * 10 * 11\) = \(2 * 5^2 * 11\)
=> Sum of prime factors of 550 = 2 + 5 + 11 = 18

So, Answer will be E
Hope it helps!

Watch the following video to learn How to find Sum of all the factors of a number

User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,588
Own Kudos:
Posts: 38,588
Kudos: 1,079
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Moderators:
Math Expert
105355 posts
Tuck School Moderator
805 posts