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18 August, 02:58

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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  1. 18 August, 04:51
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    You will have one out of 10
  2. 18 August, 06:47
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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 <==
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