It is currently 20 Oct 2017, 23:58

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

How to know when to use Binomial Equation?

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

Hide Tags

Intern
Intern
avatar
B
Joined: 25 Jul 2017
Posts: 13

Kudos [?]: 1 [0], given: 2

How to know when to use Binomial Equation? [#permalink]

Show Tags

New post 22 Aug 2017, 17:46
What clues does the question give that you need to, or should, use the binomial equation?

Kudos [?]: 1 [0], given: 2

Manager
Manager
avatar
G
Joined: 18 Dec 2016
Posts: 103

Kudos [?]: 15 [0], given: 34

GMAT 1: 760 Q50 V41
GPA: 3.3
Reviews Badge CAT Tests
Re: How to know when to use Binomial Equation? [#permalink]

Show Tags

New post 25 Aug 2017, 22:10
As far as I know, it is not essential to use binomial theorem. So, if you are struggling with the application of binomial theorem, remember that the question can be done without it.

A binomial theorem is like trigonometry for GMAT, if you know it, you may be able to solve some question directly, but even if you don't know it, you'll still be able to solve the questions.

Kudos [?]: 15 [0], given: 34

Intern
Intern
avatar
B
Joined: 07 Jul 2017
Posts: 13

Kudos [?]: 6 [0], given: 24

Location: Canada
Concentration: Finance, Economics
GMAT 1: 610 Q42 V32
GMAT 2: 690 Q47 V37
Re: How to know when to use Binomial Equation? [#permalink]

Show Tags

New post 26 Aug 2017, 01:14
Binomial Theorem:

P = nCr * (p^r) * ((1-p)^n-r)

--> let (p^r) be the prob for successes
--> let (1-p)^n-r be the prob for failures
--> let nCr be the number of ways that "successes" can be distributed among n trials (a combination)

For example you roll 6 dice all at the same time. Say you want to find the probability of rolling two 3's.
remember that the six dice are different

P = 6C2*((1/6)^2)*((5/6)^4)

Kudos [?]: 6 [0], given: 24

Senior Manager
Senior Manager
User avatar
G
Joined: 02 Mar 2017
Posts: 271

Kudos [?]: 176 [0], given: 20

Location: India
Concentration: Finance, Marketing
Re: How to know when to use Binomial Equation? [#permalink]

Show Tags

New post 26 Aug 2017, 02:14
gmat_george wrote:
What clues does the question give that you need to, or should, use the binomial equation?


I agree with gmat2k17...Questions in gmat can be done without using it... If your getting confused,better avoid Equation
_________________

Kudos-----> If my post was Helpful

Kudos [?]: 176 [0], given: 20

Re: How to know when to use Binomial Equation?   [#permalink] 26 Aug 2017, 02:14
Display posts from previous: Sort by

How to know when to use Binomial Equation?

  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®.