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In a class of 28 students, 11 have a brother and 9 have a sister. There are 2 students who have a brother and a sister. What is the probability that a student has a sister given that they have a brother?
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In a class of 28 students, 11 have a brother and 9 have a sister. There are 2 students

who have a brother and a sister. What is the probability that a student has a sister
given that they have a brother?
Can someone help me

User Levi Noecker
by
5.3k points

2 Answers

2 votes

Answer:

x=3

Explanation:

User Jijo Paulose
by
5.1k points
3 votes

Answer:

7%

Explanation:

well since only 2 students have both a brother and a sister it would be 2/28

which as a percentage is 0.07142857142 × 100 = 7.14285714286

User Ibubi
by
5.1k points
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