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A class containing 20 students has equal number of boys and girls. A
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19 Nov 2024, 03:44
19 Nov 2024, 03:44
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Question Stats:
75% (01:05) correct
25% (00:37) wrong based on 4 sessions
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A class containing 20 students has equal number of boys and girls. A teacher will select 7 students to volunteer in a social service program. If the first six selected students are girls, what is the probability that the seventh student selected is also a girl?
A. 2/7
B. 4/7
C. 1/2
D. 2/3
E. 1
A. 2/7
B. 4/7
C. 1/2
D. 2/3
E. 1
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Re: A class containing 20 students has equal number of boys and girls. A
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20 Nov 2024, 07:00
20 Nov 2024, 07:00
1
Six girls selected, 4 girls left.
Number of student remaining = 14.
Probability of selecting a girl the 7th time
4/14 = 2/7
Answer A.
Number of student remaining = 14.
Probability of selecting a girl the 7th time
4/14 = 2/7
Answer A.
gmatclubot
Re: A class containing 20 students has equal number of boys and girls. A [#permalink]
20 Nov 2024, 07:00
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