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Thomas has a bag with green marbles, blue marbles, and red marbles. For each part below, if the marble selected is replaced before the next marble is drawn, find the probability for the given draw. Write your answer as a fraction, as a decimal, and as a percent.  

  1. A red marble?

    Remember that probability can be written as a fraction:

    How many red marbles are there? How many total marbles?

  2. A red or a green marble?

    See part (a).

  3. An orange marble?

    How many orange marbles are in the bag?