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16 Apr 2018, 05:26
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
96% (00:37) correct
4%
(01:06)
wrong
based on 170
sessions
History
Date
Time
Result
Not Attempted Yet
A chess club with 8 members can send 3 people to an advanced strategy class. How many different groups of 3 members could the club possibly send?
A. 48
B. 56
C. 64
D. 72
E. 96
A. 48
B. 56
C. 64
D. 72
E. 96
16 Apr 2018, 08:12
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Bunuel
3 people can be sent to advanced strategy class while 5 people will not go to the advanced class.
The solution will be 8!/(3!*5!) = (8*7*6)/3! = 8*7 = 56
Hence option = B =56 is the answer.
21 Apr 2018, 09:23
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8C3 = 56
choosing 3 members out of 8 hence 8C3
choosing 3 members out of 8 hence 8C3
