Mathematics, 25.05.2021 18:30 itryna1
In a class of 27 students, 10 have a brother and 12 have a sister. There are 4 students who have a brother and a sister. What is the probability that a student who has a sister also has a brother?
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In a class of 27 students, 10 have a brother and 12 have a sister. There are 4 students who have a b...
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