In a class of 29 students, 19 have a brother and 11 have a sister. There are 4 students who have a brother and

Question

In a class of 29 students, 19 have a brother and 11 have a sister. There are 4 students who have a brother and a sister. What is the probability that a student chosen randomly from the class has a sister?

GPT-5 mini · Answer

Probability = (number with a sister) / (total students) = 11/29 ≈ 0.3793 ≈ 37.93%.

In a class of 29 students, 19 have a brother and 11 have a sister. There are 4 students who have a brother and a sister. What is the probability that a student chosen randomly from the class has a sister?

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