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

It is currently 30 Sep 2014, 05:58

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

subset query !

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 02 Jun 2011
Posts: 160
Followers: 1

Kudos [?]: 24 [0], given: 11

subset query ! [#permalink] New post 29 Jun 2011, 03:51
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (03:05) correct 0% (00:00) wrong based on 1 sessions
kindly explain...

to form subset of ( 10, 14, 17, 24 ) containing an odd element , istn't it ok to take 4p1 ? which gives answer as 4.

please guide on probability. i am realy week on this probability.permutation and combination !!!
[Reveal] Spoiler: OA
SVP
SVP
avatar
Joined: 16 Nov 2010
Posts: 1691
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 30

Kudos [?]: 291 [0], given: 36

Premium Member Reviews Badge
Re: subset query ! [#permalink] New post 29 Jun 2011, 03:57
Could you please post the full question ?
_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
avatar
Joined: 02 Jun 2011
Posts: 160
Followers: 1

Kudos [?]: 24 [0], given: 11

Re: subset query ! [#permalink] New post 29 Jun 2011, 04:06
how many different subset of the set (10, 14, 17, 24) contain an odd umer of elements?
a.) 3
b.) 4
c.) 8
d.) 10
e.) 12

pls help!
Math Forum Moderator
avatar
Joined: 20 Dec 2010
Posts: 2046
Followers: 127

Kudos [?]: 931 [0], given: 376

Re: subset query ! [#permalink] New post 29 Jun 2011, 04:13
kashishh wrote:
how many different subset of the set (10, 14, 17, 24) contain an odd number of elements?
a.) 3
b.) 4
c.) 8
d.) 10
e.) 12

pls help!


{10}
{14}
{17}
{24}
{10,14,17}
{10,14,24}
{10,17,24}
{14,17,24}

C^{4}_{1}+C^{4}_{3}=8

Ans: "C"
_________________

~fluke

Get the best GMAT Prep Resources with GMAT Club Premium Membership

SVP
SVP
avatar
Joined: 16 Nov 2010
Posts: 1691
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 30

Kudos [?]: 291 [0], given: 36

Premium Member Reviews Badge
Re: subset query ! [#permalink] New post 29 Jun 2011, 04:17
4C1 + 4C3 = 4 + 4 = 8

Answer - C
_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
avatar
Joined: 02 Jun 2011
Posts: 160
Followers: 1

Kudos [?]: 24 [0], given: 11

Re: subset query ! [#permalink] New post 29 Jun 2011, 04:17
doesn't this quest mean 17 as odd element ?
Manager
Manager
avatar
Joined: 02 Jun 2011
Posts: 160
Followers: 1

Kudos [?]: 24 [0], given: 11

Re: subset query ! [#permalink] New post 29 Jun 2011, 04:19
how should i get through probabilty questions? i am not able to make any improvement ... any read to recommend?
SVP
SVP
avatar
Joined: 16 Nov 2010
Posts: 1691
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 30

Kudos [?]: 291 [0], given: 36

Premium Member Reviews Badge
Re: subset query ! [#permalink] New post 29 Jun 2011, 04:22
Ans 1 - This question means that, if you select the elements of the set in all possible ways, how many of them would comprise odd numbers. So you can select 0,1,2,3,4 elements at a time. fluke has shown how many combinations are there for 1 and 3 elements.
_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

Get the best GMAT Prep Resources with GMAT Club Premium Membership

SVP
SVP
avatar
Joined: 16 Nov 2010
Posts: 1691
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 30

Kudos [?]: 291 [0], given: 36

Premium Member Reviews Badge
Re: subset query ! [#permalink] New post 29 Jun 2011, 04:23
Ans 2 - Read the Permutations and Combinations + Probability chapters in GMAT Math Book.

math-combinatorics-87345.html

math-probability-87244.html
_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
avatar
Joined: 02 Jun 2011
Posts: 160
Followers: 1

Kudos [?]: 24 [0], given: 11

Re: subset query ! [#permalink] New post 29 Jun 2011, 04:27
thanks to you both !!
Director
Director
avatar
Joined: 01 Feb 2011
Posts: 770
Followers: 14

Kudos [?]: 82 [0], given: 42

Re: subset query ! [#permalink] New post 29 Jun 2011, 14:44
odd number of elements.

As we have 4 elements , to form odd number of elements we can either form 1 element sets or 3 element sets.

so total possibilities = 4c1+4c3 = 4 +4 =8

Answer is C.
Re: subset query !   [#permalink] 29 Jun 2011, 14:44
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic A Query result 1 16 Jun 2008, 13:26
Query manab123 1 03 Jan 2007, 08:05
query coss200 2 04 Dec 2006, 10:21
Query wild_desperado 1 30 Aug 2005, 21:43
Experts publish their posts in the topic Query wild_desperado 1 30 Aug 2005, 21:42
Display posts from previous: Sort by

subset query !

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

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®.