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03-01-2016
Mathematics

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A bottle contains 12 red marbles and 8 blue marbles. A marble is chosen at random and not
replaced. Then, a second marble is chosen at random.
Determine the probability that at least one of the marbles is red.

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Аноним Аноним

03-01-2016

The same answer 81/95 can be found using two different methods. Please view the attachments below.

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