Mathematics, 03.12.2021 20:00 tasa123l14

In a class 22 students, 13 have a brother and 15 have a sister. There are 3 students who do not have any siblings. What is the probability that a student has a brother given and they do not have a sister.?

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In a class 22 students, 13 have a brother and 15 have a sister. There are 3 students who do not have...

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