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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2508
Given Kudos: 1053
GPA: 3.39
A certain club has 20 members. What is the ratio of the number of 5-me
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31 Jan 2023, 00:33
31 Jan 2023, 00:33
Expert Reply
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Question Stats:
85% (02:26) correct
14% (01:19) wrong based on 7 sessions
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A certain club has 20 members. What is the ratio of the number of 5-member committees that can be formed from the members of the club to the number of 4-member committees that can be formed from the members of the club?
A. 16 to 1
B. 15 to 1
C. 16 to 5
D. 15 to 6
E. 5 to 4
A. 16 to 1
B. 15 to 1
C. 16 to 5
D. 15 to 6
E. 5 to 4
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2508
Given Kudos: 1053
GPA: 3.39
Re: A certain club has 20 members. What is the ratio of the number of 5-me
[#permalink]
01 Feb 2023, 21:47
01 Feb 2023, 21:47
1
Expert Reply
\(\frac{C^5_{20}}{C^4_{20}}=\frac{20!}{15!*5!}*\frac{16!*4!}{20!}=\frac{16}{5}\)
Answer: C
Answer: C
gmatclubot
Re: A certain club has 20 members. What is the ratio of the number of 5-me [#permalink]
01 Feb 2023, 21:47
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