Mathematics, 29.04.2021 20:00 Beres7

In a class of 25 students, 20 have a brother and 8 have a sister. There are 3 students who do not have any siblings. What is the probability that a student who has a sister
also has a brother?

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In a class of 25 students, 20 have a brother and 8 have a sister. There are 3 students who do not have any siblings. What is the probability that a student who has a sister also has a brother?

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Another question on Mathematics

In a class of 25 students, 20 have a brother and 8 have a sister. There are 3 students who do not have any siblings. What is the probability that a student who has a sister
also has a brother?