In a class of 24 students, 5 have a brother and 16 have a sister. there are 5 students who do not have any siblings. What is the probability that a student has a brother given that they have a sister?
To find the probability that a student has a brother given that they have a sister, we need to consider the students who have sisters.
Out of the 24 students, 16 have a sister. Out of those 16 students, 5 also have a brother. Therefore, the probability that a student has a brother given that they have a sister is 5/16 or 31.25%.