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A certain musical piece is to be played by an equal number of

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Manager
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G
Joined: 18 Jun 2018
Posts: 154
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A certain musical piece is to be played by an equal number of  [#permalink]

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New post 04 Sep 2018, 23:24
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Difficulty:

  35% (medium)

Question Stats:

60% (01:03) correct 40% (01:39) wrong based on 15 sessions

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A certain musical piece is to be played by an equal number of violinists and cellists. If there are 6 violinists and 2 cellists available to play the piece, how many different groups of musicians could be selected to play the piece?

(A) 12
(B) 15
(C) 27
(D) 28
(E) 70
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Joined: 10 Feb 2017
Posts: 36
Location: Viet Nam
GPA: 3.5
WE: General Management (Education)
A certain musical piece is to be played by an equal number of  [#permalink]

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New post 05 Sep 2018, 00:40
1
You will have those combinations
If cellist = 1 -> 2*1C6 ways to choose violist as 2 ways to choose cellist
if cellist = 2 -> 2C6 = 15 ways to choose violist
=> Total = 27
OA C
Expert please helps me to correct, whether my approach is right? Thanks so much
A certain musical piece is to be played by an equal number of &nbs [#permalink] 05 Sep 2018, 00:40
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