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Mathematics, 14.04.2020 19:21 tenoi14

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In a class 29 of students, 8 have a brother and 10 have a sister. There are 17
students who do not have any siblings. What is the probability that a student
chosen randomly from the class has a sister?

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In a class 29 of students, 8 have a brother and 10 have a sister. There are 17
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