It is currently 11 Dec 2017, 16:12

### 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

# PS: Medals

Author Message
Manager
Joined: 01 Mar 2009
Posts: 50

Kudos [?]: 11 [0], given: 2

### Show Tags

16 Apr 2009, 17:10
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:39) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Just not understanding the OA. A very simple question however I got it wrong.

Medals are to be awarded to three teams in a 10-team competition. If one medal is gold, one medal is silver, and one medal is bronze, how many different ways are there to award the three medals to teams in the competition?

A) 10!/7!
B) 10!/3!7!
C) 10!/3!
D) 7!/3!
E) 7!/4!3!

Kudos [?]: 11 [0], given: 2

Intern
Joined: 09 Apr 2009
Posts: 7

Kudos [?]: 1 [0], given: 0

### Show Tags

16 Apr 2009, 17:39
A.

Permutations formula..n!/(n-k)! n=10, k=3

Or simply: 10 teams to choose from for gold, 9 for silver, 8 for bronze so 10*9*8, which is 10!/7!

Kudos [?]: 1 [0], given: 0

Manager
Joined: 01 Mar 2009
Posts: 50

Kudos [?]: 11 [0], given: 2

### Show Tags

16 Apr 2009, 19:31
Thanks
I figured out what my problem is...forgot about the concept of sequence.

Kudos [?]: 11 [0], given: 2

Director
Joined: 01 Apr 2008
Posts: 872

Kudos [?]: 868 [0], given: 18

Name: Ronak Amin
Schools: IIM Lucknow (IPMX) - Class of 2014

### Show Tags

22 Apr 2009, 06:46
Simple but basic problem to understand combination vs permutation

Since medals are distinct >> order matters >> use permutation.

If medals are not distinct >> order does not matter >> use combination.

Kudos [?]: 868 [0], given: 18

Re: PS: Medals   [#permalink] 22 Apr 2009, 06:46
Display posts from previous: Sort by