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In a class of 28 students, 19 have a brother and 8 have a sister. There are 5 students who have a brother and a sister. What is the probability that a student chosen randomly fr…

In a class of 28 students, 19 have a brother and 8 have a sister. There are 5 students who have a brother and a sister. What is the probability that a student chosen randomly fr…
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1 vote
In a class of 28 students, 19 have a brother and 8 have a sister. There are 5 students who have a brother and a sister. What is the probability that a student chosen randomly from the class does not have a brother?

asked
User Hung Cao
by
8.8k points

1 Answer

4 votes

Explanation:

See Venn diagram below

Does not have a brother = 3 + 6 = 9 students out of 28 = 9/28

answered
User Cengiz Sevimli
by
8.5k points
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