nparzi13 nparzi13

28-02-2018
Mathematics

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A bag has 7 red marbles, 8 blue marbles and 3 black marbles. What is the probability of picking a black marble, replacing it, and then picking a red marble?

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meababy2009ow9ewa meababy2009ow9ewa

28-02-2018

probability of picking a black marble is 3/18.
probability of picking red is 7/18

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