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13 July, 18:42

A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random. What is the probability of first drawing a blue marble and then, without replacing it, drawing a red marble?

A. 9/20

B. 3/38

C. 1/19

D. 11/20

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Answers (1)
  1. 13 July, 18:53
    0
    First: 5/20

    second: 6/19

    5/20 x 6/19 = 30/380 = 15/190 = 3/38. The answer is B
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