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28 May, 07:04

a jar contains 30 red marbles 50 blue marbles and 20 white marbles if you select one marble from the jar at random what is the theoretical probability of getting a red marble

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Answers (2)
  1. 28 May, 07:24
    0
    3/10

    Step-by-step explanation:

    P (red) = red marbles / total marbles

    We have 30 red marbles

    total marbles = (20 white + 50 blue + 30 red) = 100 marbles

    P (red) = 30/100 = 3/10
  2. 28 May, 07:32
    0
    0.30 or 30%.

    Step-by-step explanation:

    This = number of re marbles / total number of marbles

    = 30 / (30+50+20)

    = 30 / 100

    = 0.30.
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