M05 P.S Problem : Retired Discussions [Locked]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 16:17

### 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

# M05 P.S Problem

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 02 Oct 2008
Posts: 58
Followers: 5

Kudos [?]: 60 [0], given: 0

M05 P.S Problem [#permalink]

### Show Tags

10 Dec 2009, 20:29
If a fair coin marked 1 and 2, and a fair die are rolled together, what is a probability to have the sum even?
Ans is 1/2

Possible combination for the above question is
1+1,1+3,1+5,2+2,2+4,2+6,6+2,4+2,5+1,3+1

Probability = 10/12 = 5/6

Why is 2+6 and 6+2 etc. are considered as same in the above problem?
VP
Joined: 05 Mar 2008
Posts: 1473
Followers: 11

Kudos [?]: 261 [0], given: 31

Re: M05 P.S Problem [#permalink]

### Show Tags

10 Dec 2009, 20:41
tania wrote:
If a fair coin marked 1 and 2, and a fair die are rolled together, what is a probability to have the sum even?
Ans is 1/2

Possible combination for the above question is
1+1,1+3,1+5,2+2,2+4,2+6,6+2,4+2,5+1,3+1

Probability = 10/12 = 5/6

Why is 2+6 and 6+2 etc. are considered as same in the above problem?

because the six can only come out on the die and the 2 on the fair coin...therefore, 6 has to be the die whether you roll the die first or second
Re: M05 P.S Problem   [#permalink] 10 Dec 2009, 20:41
Similar topics Replies Last post
Similar
Topics:
3 M05 #16 15 08 Oct 2008, 15:27
6 M05 #4 21 24 Sep 2008, 09:57
26 m05 #22 28 21 Sep 2008, 10:08
3 ps - wheels (m05q23) 23 04 Sep 2008, 10:33
7 PS - Movies (m05q27) 26 21 Aug 2007, 20:25
Display posts from previous: Sort by

# M05 P.S Problem

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

Moderator: Bunuel

 Powered by phpBB © phpBB Group and phpBB SEO 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®.