Of 30 students in a class 17 have a brother, 20 have a sister, and 11 have a brother and a sister. What is the probability that

Question

tamaranim1 [39]

3 years ago

14

Of 30 students in a class 17 have a brother, 20 have a sister, and 11 have a brother and a sister. What is the probability that

a randomly selected student has a brother given they have a sister?

Mathematics

1 answer:

dem82 [27] · Answer 1 · 2022-01-23T19:00:04+03:00

dem82 [27]3 years ago

7 0

Answer:

11/30

Step-by-step explanation:

Since there are 30 students in total, and 11 of them have both a brother and a sister, then 11/30 (11 out of the 30 students) would be the probability of a student having a brother given that they have a sister.