GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 22 Jan 2019, 22:14

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 January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
• The winners of the GMAT game show

January 22, 2019

January 22, 2019

10:00 PM PST

11:00 PM PST

In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one.
• Key Strategies to Master GMAT SC

January 26, 2019

January 26, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

Auston, Brian, and Charlie each roll a fair dice simultaneously.

Author Message
TAGS:

Hide Tags

Intern
Joined: 07 Dec 2016
Posts: 40
Auston, Brian, and Charlie each roll a fair dice simultaneously.  [#permalink]

Show Tags

15 Apr 2017, 04:02
3
00:00

Difficulty:

35% (medium)

Question Stats:

64% (01:20) correct 36% (01:08) wrong based on 61 sessions

HideShow timer Statistics

Auston, Brian, and Charlie each roll a fair dice simultaneously. The rolls of the die are independent and the outcome is thought to be random. What is the probability that exactly one of the three individuals obtains a six on his dice while the other two individuals do not?

A) 1/216
B) 25/216
C) 5/36
D) 25/72
E) 125/216

_________________

Cheers!
If u like my post..... payback in Kudos!!

Intern
Joined: 12 Feb 2017
Posts: 17
GMAT 1: 740 Q50 V40
Re: Auston, Brian, and Charlie each roll a fair dice simultaneously.  [#permalink]

Show Tags

15 Apr 2017, 06:58
1
Probabilty of getting a 6 is 1/6 and not getting a six is 5/6

Lets take the probability of one case when Auston gets a six and other two do not: 1/6*5/6*5/6 = 25/216

We have three such cases so prob = 25/216*3 = 25/72

Ans D

Sent from my iPhone using GMAT Club Forum
Manager
Joined: 01 Nov 2016
Posts: 66
Concentration: Technology, Operations
Auston, Brian, and Charlie each roll a fair dice simultaneously.  [#permalink]

Show Tags

04 May 2017, 13:29
Rishirajchauhan11 wrote:
Probabilty of getting a 6 is 1/6 and not getting a six is 5/6

Lets take the probability of one case when Auston gets a six and other two do not: 1/6*5/6*5/6 = 25/216

We have three such cases so prob = 25/216*3 = 25/72

Ans D

Sent from my iPhone using GMAT Club Forum

Don't we have more than three cases? There should be six cases where it's possible:

Abc
Acb
aBc
cBa
abC
baC

Can combinations be used to solve this problem?
Auston, Brian, and Charlie each roll a fair dice simultaneously. &nbs [#permalink] 04 May 2017, 13:29
Display posts from previous: Sort by