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A bag has 2 yellow, 7 red, and 1 green marble. What is the probability of picking a green marble, replacing it, and then picking a yellow marble?
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A bag has 2 yellow, 7 red, and 1 green marble. What is the probability of picking a green marble, replacing it, and then picking a yellow marble?

User Xun Yang
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2 Answers

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you will have one out of 10
User Cibele
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2 yellow marbles, 7 red marbles, 1 green marble.....total of 10 marbles

probability of picking a green marble : 1/10
replacing marble
probability of picking a yellow marble : 2/10 reduces to 1/5

probability of both events happening : 1/10 * 1/5 = 1/50 <==
User Tadashi
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