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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2508
Given Kudos: 1053
GPA: 3.39
In a certain group of 10 members, 4 members teach only French and the
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12 Dec 2022, 06:07
12 Dec 2022, 06:07
Expert Reply
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Question Stats:
83% (01:32) correct
16% (01:42) wrong based on 6 sessions
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In a certain group of 10 members, 4 members teach only French and the rest teach only Spanish or German. If the group is to choose 3-member committee, which must have at least 1 member who teaches French, how many different committee can be chosen ?
A. 40
B. 50
C. 64
D. 80
E. 100
A. 40
B. 50
C. 64
D. 80
E. 100
Re: In a certain group of 10 members, 4 members teach only French and the
[#permalink]
14 Dec 2022, 04:35
14 Dec 2022, 04:35
Expert Reply
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Case 1
1french 2either German or Spanish: 4C1 * 6C2 = 4 * 15 = 60
Case 2
2french 1either German or Spanish: 4C2 * 6C1 = 6 * 6 = 36
Case 3
3french 4C3 = 4
Answer is E = 100
1french 2either German or Spanish: 4C1 * 6C2 = 4 * 15 = 60
Case 2
2french 1either German or Spanish: 4C2 * 6C1 = 6 * 6 = 36
Case 3
3french 4C3 = 4
Answer is E = 100
gmatclubot
Re: In a certain group of 10 members, 4 members teach only French and the [#permalink]
14 Dec 2022, 04:35
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