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OpenStudy (anonymous):
A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a blue marble, replacing it, and then picking a black marble?
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OpenStudy (ganpat):
total marbles in bag = 15.. Number of a blue marble = 6 So probability = 6/15.. Now keeping it in bag and picking black marble = 4/15.. So probability = (6/15) * (4/15)...
OpenStudy (anonymous):
Thank you! that was very helpful!
OpenStudy (ganpat):
great.. so u got the answer.. i assume..
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