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27 October, 15:00

A box-contains 3 blue and 2 red marbles while another box contains 2

blue and 5 red marldes. A marble drawn at random from one of the boxes

turns out to be blue. what is the probability that it came from the first box?

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Answers (1)
  1. 27 October, 16:34
    0
    3/5

    Step-by-step explanation:

    (3/5) · (1/2) over (3/5) · (1/2) + (2/5) · (1/2)

    = 3/5
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