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A total of 10 people will watch a movie on 7 days of the week. What i
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07 Nov 2024, 06:15
07 Nov 2024, 06:15
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10% (00:46) correct
90% (00:40) wrong based on 10 sessions
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A total of 10 people will watch a movie on 7 days of the week. What is the probability that at least two of them will watch the movie on the same day?
A. 1/3
B. 1/2
C. 2/3
D. 1
E. Cannot be determined
A. 1/3
B. 1/2
C. 2/3
D. 1
E. Cannot be determined
Re: A total of 10 people will watch a movie on 7 days of the week. What i
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18 Dec 2024, 14:25
18 Dec 2024, 14:25
Expert Reply
A total of 10 people will watch a movie on 7 days of the week; we need to find the probability that at least two of them will watch the movie on the same day.
Since there are 10 people and only 7 days in a week it is not possible that each person watches movie on a different day, so there must be at least two people watching movie on the same day.
Hence the required probability being a sure event is $\(100 \%=1\)$, so the answer is (D).
Since there are 10 people and only 7 days in a week it is not possible that each person watches movie on a different day, so there must be at least two people watching movie on the same day.
Hence the required probability being a sure event is $\(100 \%=1\)$, so the answer is (D).
gmatclubot
Re: A total of 10 people will watch a movie on 7 days of the week. What i [#permalink]
18 Dec 2024, 14:25
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