Mathematics, 15.03.2020 08:20 weeblordd

In a class 30 of students, 22 have a brother and 25 have a sister. There are 2 students who do not have any siblings. What is the probability that a student chosen randomly from the class does not have a sister?

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In a class 30 of students, 22 have a brother and 25 have a sister. There are 2 students who do not h...

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