millerblaine128 millerblaine128

19-06-2017
Mathematics

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A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a red marble, replacing it, and then picking a black marble

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Аноним Аноним

19-06-2017

9/15

15 marbles in total
9 because i added 5 red marbles + 4 black marbles

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malhisahil18 malhisahil18

19-06-2017

The answer would be about 9/15

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