Mathematics, 14.12.2020 01:00 avastanleyy

In a class of 23 students, 16 have a brother and 15 have a sister. There are 11 students who have a brother and a sister. What is the probability that a student chosen
randomly from the class is an only child?

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In a class of 23 students, 16 have a brother and 15 have a sister. There are 11 students who have a...