Last visit was: 16 Nov 2024, 08:57 It is currently 16 Nov 2024, 08:57

Close

GRE Prep 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 GRE 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.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 29962
Own Kudos [?]: 36246 [1]
Given Kudos: 25911
Send PM
GRE Prep Club Tests Editor
Joined: 13 May 2019
Affiliations: Partner at MyGuru LLC.
Posts: 186
Own Kudos [?]: 332 [0]
Given Kudos: 5
Location: United States
GMAT 1: 770 Q51 V44
GRE 1: Q169 V168
WE:Education (Education)
Send PM
avatar
Manager
Manager
Joined: 22 Aug 2019
Posts: 96
Own Kudos [?]: 85 [0]
Given Kudos: 0
Send PM
avatar
Intern
Intern
Joined: 27 Jun 2019
Posts: 40
Own Kudos [?]: 17 [0]
Given Kudos: 0
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
1
MyGuruStefan wrote:
Quote:
The University of Maryland, University of Vermont, and Emory University have each 4 soccer players. If a team of 9 is to be formed with an equal number of players from each university, how many number of ways can the selections be done?

To avoid using Combination or Permutation notation, think through the problem logically.

If a team of nine is to be formed with an equal number of players from three teams, then each team must contribute 3 players. Since there are 4 players available from each team that means that in each combination only one player will be left out, which implies that at any given time one of the 4 players could be left out. Therefore, there are logically only 4 ways to select the playing players from each team.

Then, since there are 4 available combinations from each team and three teams in total, add those three outcomes together to find that there are 4 + 4 + 4 = 12 different combinations of available players, which matches choice C.


Are we looking for the number of ways to arrange the 9-player team? If so, doesn't the Fundamental Counting Principle tell us to MULTIPLY the number of ways each individual team can make the selection? In this case, I think the answer should be 4*4*4 = 64
avatar
Intern
Intern
Joined: 21 Oct 2019
Posts: 3
Own Kudos [?]: 0 [0]
Given Kudos: 0
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
64???
GRE Prep Club Tests Editor
Joined: 13 May 2019
Affiliations: Partner at MyGuru LLC.
Posts: 186
Own Kudos [?]: 332 [0]
Given Kudos: 5
Location: United States
GMAT 1: 770 Q51 V44
GRE 1: Q169 V168
WE:Education (Education)
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
Expert Reply
170896 wrote:
Are we looking for the number of ways to arrange the 9-player team? If so, doesn't the Fundamental Counting Principle tell us to MULTIPLY the number of ways each individual team can make the selection? In this case, I think the answer should be 4*4*4 = 64

That would be the method for finding a THREE player team, not a nine-player team :-)
User avatar
Director
Director
Joined: 22 Jun 2019
Posts: 521
Own Kudos [?]: 709 [0]
Given Kudos: 161
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
What will be the answer if the question like this ------

The University of Maryland, University of Vermont, and Emory University have each 4 soccer players. If a team of 9 is to be formed with an equal number of players from each university, how many possible teams are there?
avatar
Intern
Intern
Joined: 16 Jun 2021
Posts: 7
Own Kudos [?]: 3 [1]
Given Kudos: 0
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
1
please let me know if i am right.
Each student is given a number, so:

Maryland University students: 1,2,3,4
Ways 3 persons possibly can be selected: (1,2,3) ,(1,2,4), (1,3,4),(2,3,4)

Vermont University students: 5,6,7,8
Ways 3 persons possibly can be selected: (5,6,7) ,(5,6,8), (5,7,8),(6,7,8)

Emory University students: 9,10,11,12
Ways 3 persons possibly can be selected: (9,10,11) ,(9,10,12), (9,11,12),(10,11,12)

Number of ways a team of 9 is formed:
(1,2,3)(5,6,7)(9,10,11)
(1,2,3)(5,6,7)(9,10,12)
(1,2,3)(5,6,7)(9,11,12)
(1,2,3)(5,6,7)(10,11,12).....
so there are 64 different teams of 9 persons selected equally from 3 Universities
GRE Instructor
Joined: 24 Dec 2018
Posts: 1065
Own Kudos [?]: 1424 [1]
Given Kudos: 24
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
1
mohammadmh91 wrote:
please let me know if i am right.
Each student is given a number, so:

Maryland University students: 1,2,3,4
Ways 3 persons possibly can be selected: (1,2,3) ,(1,2,4), (1,3,4),(2,3,4)

Vermont University students: 5,6,7,8
Ways 3 persons possibly can be selected: (5,6,7) ,(5,6,8), (5,7,8),(6,7,8)

Emory University students: 9,10,11,12
Ways 3 persons possibly can be selected: (9,10,11) ,(9,10,12), (9,11,12),(10,11,12)

Number of ways a team of 9 is formed:
(1,2,3)(5,6,7)(9,10,11)
(1,2,3)(5,6,7)(9,10,12)
(1,2,3)(5,6,7)(9,11,12)
(1,2,3)(5,6,7)(10,11,12).....
so there are 64 different teams of 9 persons selected equally from 3 Universities


The question is not asking for the number of different teams that can be formed, in which case you are right. The question is asking how many number of ways the selections can be done.

We can select 3 out of 4 players from The University of Maryland in 4!/(3! * (4 - 3)!) = 4 ways
We can select 3 out of 4 players from The University of Vermont in 4!/(3! * (4 - 3)!) = 4 ways
We can select 3 out of 4 players from Emory University in 4!/(3! * (4 - 3)!) = 4 ways

Therefore, the total number of ways the selection can be made is 4 + 4 + 4 = 12 ways
GRE Instructor
Joined: 24 Dec 2018
Posts: 1065
Own Kudos [?]: 1424 [0]
Given Kudos: 24
Send PM
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
Also it is not an official ETS question. The source is NOVA. Hence the confusion and ambiguity. The wording of the problem could have been better.
Prep Club for GRE Bot
Re: The University of Maryland, University of Vermont, and Emory [#permalink]
Moderators:
GRE Instructor
78 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne