Which of the following is the probability that a green marble will be selected from a bag containing

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Which of the following is the probability that a green marble will be selected from a bag containing 9 red marbles 6 blue marbles 7 green marbles and 11 yellow marbles if one is selected randomly?

Total marbles in the bag:
9 red + 6 blue + 7 green + 11 yellow = 33

P(Green) = Green Marbles / Total Marbles
P(Green) = 7/33
 
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