Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 24 Aug 2016, 15:15

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Probability

Author Message
TAGS:

### Hide Tags

Manager
Joined: 04 Apr 2013
Posts: 153
Followers: 1

Kudos [?]: 39 [0], given: 36

### Show Tags

29 Apr 2014, 06:25
Formulas for

5 distinct things in 4 distinct groups

5c4/2!

5 identical things in 4 distinct groups
n+r-1 c r-1

5 distinct things in 4 identical groups
-- Dont know.

5 identical things in 4 identical groups
4^5

Are these correct.

_________________

MGMAT1 - 540 ( Trying to improve )

Magoosh GMAT Instructor
Joined: 28 Dec 2011
Posts: 3305
Followers: 1122

Kudos [?]: 4923 [0], given: 54

### Show Tags

30 Apr 2014, 16:47
Formulas for

5 distinct things in 4 distinct groups

5c4/2!

5 identical things in 4 distinct groups
n+r-1 c r-1

5 distinct things in 4 identical groups
-- Dont know.

5 identical things in 4 identical groups
4^5

Are these correct.

I'm happy to respond. With all due respect, you have not done a very good job of asking your question. Use complete sentences. Be very clear about exactly what you mean. For example, in the phrase "5 distinct things in 4 distinct groups," I have no clue what you are trying to communicate. You need to explain a specific example in detail.

Part of being an excellent student is learning how to ask high quality questions. If you can ask truly high quality questions, then you will get all the information that you need. This is a very difficult skill to learn, and students often underestimate how much it can help them.

Mike
_________________

Mike McGarry
Magoosh Test Prep

Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 6827
Location: Pune, India
Followers: 1917

Kudos [?]: 11919 [0], given: 221

### Show Tags

01 May 2014, 20:58
Formulas for

5 distinct things in 4 distinct groups

5c4/2!

5 identical things in 4 distinct groups
n+r-1 c r-1

5 distinct things in 4 identical groups
-- Dont know.

5 identical things in 4 identical groups
4^5

Are these correct.

No, they are not. I have discussed these 4 cases in the following two posts:
http://www.veritasprep.com/blog/2011/12 ... 93-part-1/
http://www.veritasprep.com/blog/2011/12 ... s-part-ii/
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Get started with Veritas Prep GMAT On Demand for \$199

Veritas Prep Reviews

Re: Probability   [#permalink] 01 May 2014, 20:58
Similar topics Replies Last post
Similar
Topics:
Probability 1 27 Nov 2011, 22:36
6 Probability 3 13 Jul 2011, 16:34
18 If p^2 – 13p + 40 = q, and p is a positive integer between 1 9 09 Mar 2011, 07:56
5 A certain board game consists of a circular path of 100 spaces colored 9 07 Mar 2011, 01:02
140 Set S consists of numbers 2, 3, 6, 48, and 164. Number K is 20 28 Mar 2008, 02:32
Display posts from previous: Sort by