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17 January, 17:09

Nico owns 11 instructional piano books. Two are beginner books, six are intermediate books, and three are advanced books. If two books are randomly chosen from the collection, one at a time, and replaced after each pick, what is the probability that he first chooses an advanced book and then chooses a beginner book?

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  1. 17 January, 18:35
    0
    2 beginner, 6 intermediate, 3 advanced ... total of 11

    P (advanced) = 3/11

    replaced

    P (beginner) = 2/11

    P (both) = 3/11 * 2/11 = 6/121 <=
  2. 17 January, 20:43
    0
    That's crazy B. Whom would of thought having that many books?
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