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

 It is currently 27 May 2016, 09:42

### 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

# What is the Probability of getting exactly 2 sixes on three

Author Message
TAGS:

### Hide Tags

Intern
Joined: 05 Mar 2011
Posts: 9
Followers: 1

Kudos [?]: 4 [1] , given: 4

What is the Probability of getting exactly 2 sixes on three [#permalink]

### Show Tags

20 Jan 2012, 16:02
1
KUDOS
1
This post was
BOOKMARKED
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 6 sessions

### HideShow timer Statistics

What is the Probability of getting exactly 2 sixes on three rolls of a fair six sided die?

OA:
[Reveal] Spoiler:
5/72
Math Expert
Joined: 02 Sep 2009
Posts: 33052
Followers: 5766

Kudos [?]: 70632 [1] , given: 9856

Re: What is the Probability of getting exactly 2 sixes on three [#permalink]

### Show Tags

20 Jan 2012, 16:15
1
KUDOS
Expert's post
Professor5180 wrote:
What is the Probability of getting exactly 2 sixes on three rolls of a fair six sided die?

Tha answer is 5/72. Don't know how they got it.

$$P=\frac{3!}{2!}*\frac{1}{6}*\frac{1}{6}*\frac{5}{6}=\frac{5}{72}$$: multiplying by 3!/2!=3 as {6}{6}{Other than 6} scenario can occur in 3 ways: {6}{6}{O}, {6}{O}{6}, {O}{6}{6} (# of permutation of 3 objects out of which 2 are identical).
_________________
Intern
Joined: 05 Mar 2011
Posts: 9
Followers: 1

Kudos [?]: 4 [0], given: 4

Re: What is the Probability of getting exactly 2 sixes on three [#permalink]

### Show Tags

20 Jan 2012, 16:32
Thank you very much Bunuel. Your speedy service beats Mc Donalds any day!
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 9645
Followers: 465

Kudos [?]: 120 [0], given: 0

Re: What is the Probability of getting exactly 2 sixes on three [#permalink]

### Show Tags

21 Oct 2014, 15:41
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.
_________________
Re: What is the Probability of getting exactly 2 sixes on three   [#permalink] 21 Oct 2014, 15:41
Similar topics Replies Last post
Similar
Topics:
1 What is the probability of getting three heads in a row and then a tai 5 13 Jul 2015, 00:22
5 What is the probability of rolling three six-sided dice, and getting a 6 14 Apr 2015, 05:14
11 What is the probability of rolling the same number exactly three times 10 14 Apr 2015, 05:09
13 What is the probability of getting exactly three heads on 3 21 Apr 2014, 21:52
12 A gambler rolls three fair six-sided dice. What is the probability 5 31 Jan 2012, 17:50
Display posts from previous: Sort by