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3 January, 11:58

a bag contains 2 red marbles, 3 green marbles, and 2 black marbles what is the probability of drawing out a black marble

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Answers (2)
  1. 3 January, 12:54
    0
    P (black) = 2/7

    Step-by-step explanation:

    We need to know the total amount of marbles.

    2 red + 3 green + 2 black = 7 marbles

    P (black) = number of black marbles / total marbles

    = 2 / 7
  2. 3 January, 14:05
    0
    It should be 2:7 (or, written as a fraction 2/7)
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