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11 February, 16:05

You have 2 red marbles, 4 green and 2 blue marbles. What is the probability of pulling a red marble and then replacing the first marble and then grabbing a green marble?

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  1. 11 February, 17:41
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    1/8.

    Step-by-step explanation:

    There are a total of 8 marbles.

    Probability of first drawing a red marble = 2/8 = 1/4.

    Probability of drawing a green marble = 4/8 = 1/2.

    So the probability of Red then Green = 1/4 * 1/2

    = 1/8 (answer).

    The probabilities are multiplied because the 2 events are independent.
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