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In a class of 30 students, 12 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 who has a brother also has a sister?​
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In a class of 30 students, 12 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 who has a brother also has a sister?​

User Max Fratane
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12 I think , actually I am not sure about this , if it is wrong count on me
User CampbellGolf
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