It is currently 18 Feb 2018, 21:55

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

Probability vs combinations approach

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

Hide Tags

Senior Manager
Senior Manager
User avatar
S
Joined: 08 Dec 2015
Posts: 315
GMAT 1: 600 Q44 V27
Reviews Badge
Probability vs combinations approach [#permalink]

Show Tags

New post 16 Feb 2017, 07:41
Hi everyone!

Is there a good pattern to look for when doing probability questions, so we can decide if take the probability approach or the combinations approach?

Also, is there a checklist of thing we have to look for before we approach the question?

Like it seems that when I do probabilities I have no method what so ever, I just select an approach that seems to make sense and do it because I have something I can solve in front of me.

Thank you!
Expert Post
Top Contributor
SVP
SVP
User avatar
P
Joined: 11 Sep 2015
Posts: 2049
Location: Canada
Re: Probability vs combinations approach [#permalink]

Show Tags

New post 16 Feb 2017, 08:56
Expert's post
Top Contributor
iliavko wrote:
Hi everyone!

Is there a good pattern to look for when doing probability questions, so we can decide if take the probability approach or the combinations approach?

Also, is there a checklist of thing we have to look for before we approach the question?

Like it seems that when I do probabilities I have no method what so ever, I just select an approach that seems to make sense and do it because I have something I can solve in front of me.

Thank you!


Great question.
The answer isn't straightforward. In most cases, I find that applying the probability rules is the faster approach, but there are times when counting is better.
If you're interested, here's a video that's devoted to determining the best approach with probability questions.



Cheers,
Brent
_________________

Brent Hanneson – Founder of gmatprepnow.com

Image

Re: Probability vs combinations approach   [#permalink] 16 Feb 2017, 08:56
Display posts from previous: Sort by

Probability vs combinations approach

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


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®.