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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
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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.

User Cherry Wu
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The same answer 81/95 can be found using two different methods. Please view the attachments below.
A bottle contains 12 red marbles and 8 blue marbles. A marble is chosen at random-example-1
A bottle contains 12 red marbles and 8 blue marbles. A marble is chosen at random-example-2
User Dariel
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7.3k points
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