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The probability of pulling a red marble out of the bowl can be calculated by dividing the number of red marbles by the total number of marbles in the bowl.
Number of red marbles = 120 - 80 - 28 = 12
Total number of marbles = 120
So, probability = Number of red marbles / Total number of marbles
= 12 / 120
= 1 / 10
Therefore, the probability of Nicole pulling a red marble out of the bowl is 1/10 or 0.1.