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13 December, 23:34

An experiment consists of randomly selecting a marble from a bag, keeping it, and then selecting another marble. The bag contains 4 blue marbles, 3 green marbles, 7 red marbles, and 1 yellow marble. What is the probability of selecting a red marble and then a blue marble? SHOW ALL WORK!

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  1. 14 December, 01:49
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    2/15

    Step-by-step explanation:

    How many marbles are in the bag

    4blue + 3 green + 7 red + 1 yellow = 15 marbles

    On the 1st draw:

    red/total = 7/15

    Since we keep the marble, there are only 14 marbles left

    4blue + 3 green + 6 red + 1 yellow = 14

    On the 2nd draw:

    blue/total = 4/14 = 2/7

    To find the probability of the two draws, we multiply them together

    1st draw * 2nd draw

    7/15 * 2/7 = 2/15
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