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A bag has five red marbles, six blue marbles, and four black marbles. What is the probability of picking a blue marble, replacing it, and then picking a black marble?

Respuesta :

5+6+4=15
blue marble = 6 out of 15
replacing blue marble for black = 4 out of 14
toporc
P(blue) = 6/15
P(black) = 4/15
[tex]P(blue\ then\ black)=\frac{6}{15}\times\frac{4}{15}=\frac{8}{75}[/tex]
The required value of probability is 8/75.

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