Considering it's concept, it is found that the number of outcomes in the sample space is of 9.
The sample space is the set that contains all possible outcomes for an experiment.
In this problem, there are 2 trials, each with 3 possible outcomes(red, blue or green), hence the number of possible outcomes is given by:
N = 3² = 9.
More can be learned about sample spaces at https://brainly.com/question/25861936
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