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2 December, 20:55

Carla is going to draw a marble from the bag shown below, replace it, and then draw another marble. What is the probability that Carla will get a green or yellow marble on the first draw and a blue on the second draw? (3 green, 4 yellow, 5 blue, 8 pink)

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  1. 2 December, 21:15
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    7/80

    Step-by-step explanation:

    (3 green, 4 yellow, 5 blue, 8 pink) = 20 marbles

    P (green or yellow) = number of green or yellow / total

    = (3+4) / 20 = 7/20

    Replace

    so we have (3 green, 4 yellow, 5 blue, 8 pink) = 20 marbles

    P (blue) = number of blue / total

    = 5/20 = 1/4

    P (green or yellow, replace, blue) = 7/20 * 1/4 = 7/80
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