|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
30 Oct 2014, 09:23
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
73% (00:40) correct
27%
(00:59)
wrong
based on 596
sessions
History
Date
Time
Result
Not Attempted Yet
Tough and Tricky questions: Combinations.
How many ways are there to award a gold, silver and bronze medal to 10 contending teams?
A. 10 × 9 × 8
B. 10!/(3!7!)
C. 10!/3!
D. 360
E. 300
30 Oct 2014, 17:26
Kudos
Bookmarks
Bunuel
10 teams may receive one medal, other 9 may receive the second and the rest 8 are contenders for the third one.
10*9*8
A
16 May 2016, 13:09
Kudos
Bookmarks
we clearly know that there can be only one winning team which deserves the gold medal. we can do the selection in 10 ways
if gold medal is given to 1 of the teams then only possible 9 teams can be considered for silver medal. we can do selection in 9 ways
similarly if gold and silver medals are awarded then only remaining 8 teams can be considered for a bronze medal. we can do the selection in 8 ways
Total number of ways to select the 3 possible medal winners = 10 * 9 * 8
Correct answer - A
if gold medal is given to 1 of the teams then only possible 9 teams can be considered for silver medal. we can do selection in 9 ways
similarly if gold and silver medals are awarded then only remaining 8 teams can be considered for a bronze medal. we can do the selection in 8 ways
Total number of ways to select the 3 possible medal winners = 10 * 9 * 8
Correct answer - A
