GMAT Changed on April 16th - Read about the latest changes here
close

It is currently 24 Apr 2018, 00:01
Search
Register
GMAT Club Tests
Decision Tracker
My Rewards
New posts
Unanswered

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.

Go to My Workbook Learn more
Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar
CLICK HERE TO HIDE/SHOW EVENTS

A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks.

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
  Sort by Date Sort by Kudos  
Search for:
 
Print view
First unread post
Author Message
TAGS:

Hide Tags
Manager
Manager
avatar
Joined: 09 Jun 2010
Posts: 70
A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

Show Tags

New post 19 Jul 2010, 03:07
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

96% (00:17) correct 4% (00:50) wrong based on 99 sessions

HideShow timer Statistics

A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. What is the probability that a block picked at random from the box will be red ?

1/25
1/12
1/7
1/5
1/3
[Reveal] Spoiler: OA
Manager
Manager
avatar
Joined: 03 Jun 2010
Posts: 155
Location: United States (MI)
Concentration: Marketing, General Management
Schools: Ross '15 (A), Duke '15 (D), Darden '14 (D)
WE: Business Development (Consumer Products)
GMAT ToolKit User Reviews Badge
Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

Show Tags

New post 19 Jul 2010, 03:40
There are 25 reds out of 300 blocks.

25/300 = 1/12 (B)
Intern
Intern
avatar
Joined: 05 Jul 2010
Posts: 22
Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

Show Tags

New post 19 Jul 2010, 04:33
You're right. It would be B.
_________________

If you like my posts please consider giving me KUDOS!!!!!!!!!

Thanks:)

Expert Post
EMPOWERgmat Instructor
User avatar
D
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 11507
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: 340 Q170 V170
Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

Show Tags

New post 07 Dec 2017, 14:50
Expert's post
Hi All,

This question is an example of a fairly straight-forward probability question.

Probability = (# of ways that give us what we "want")/(Total # of ways possible).

Here, we have a total of 25+100+175 = 300 blocks and 25 of those blocks are red. Thus, the probability of randomly pulling one red block from that group is...

25/300 = 1/12

Final Answer:
[Reveal] Spoiler:
B


GMAT assassins aren't born, they're made,
Rich
_________________

760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/

***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!***********************

Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks.   [#permalink] 07 Dec 2017, 14:50
Print view
First unread post
Display posts from previous: Sort by

A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks.

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

Moderators: chetan2u, VeritasPrepKarishma, niks18, Bunuel, mikemcgarry, generis

Search for:


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

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions