dolyank16 dolyank16

07-09-2016
Mathematics

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A small class has 9 students, 4 of whom are girls and 5 of whom are boys. The teacher is going to choose two of the students at random. What is the probability that the first student chosen will be a boy and the second will be a girl?

Respuesta :

07-09-2016

20/72 = 10/36 = 5/18

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