Mathematics, 04.06.2020 14:04 maymayrod2000

In a class 28 of students, 10 have a brother and 19 have a sister. There are 4 students who have a brother and a sister. What is the probability that a student chosen randomly from the class has a brother?

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In a class 28 of students, 10 have a brother and 19 have a sister. There are 4 students who have a b...

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