It is currently 19 Sep 2019, 19:55

### 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

# Jill is dividing her ten-person class into two teams

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Intern
Joined: 20 May 2019
Posts: 31
Followers: 0

Kudos [?]: 2 [0], given: 0

Jill is dividing her ten-person class into two teams [#permalink]  08 Jun 2019, 05:53
00:00

Question Stats:

0% (00:00) correct 100% (00:03) wrong based on 1 sessions
Jill is dividing her ten-person class into two teams of equal size for a basketball game. If no one will sit out, how many different match-ups between the two teams are possible?

A. 10
B. 25
C. 126
D. 252
E. 630
[Reveal] Spoiler: OA
Founder
Joined: 18 Apr 2015
Posts: 8139
Followers: 157

Kudos [?]: 1710 [0], given: 7485

Re: Jill is dividing her ten-person class into two teams [#permalink]  09 Jun 2019, 10:14
Expert's post
We can divide a group of 10 people into 2 teams of 5 in $$\frac{C^5_{10}*C^5_5}{2!}=126$$ ways (dividing by 2! because the order of the groups doesn't matter).
_________________
Re: Jill is dividing her ten-person class into two teams   [#permalink] 09 Jun 2019, 10:14
Display posts from previous: Sort by

# Jill is dividing her ten-person class into two teams

 Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.