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your probability would be 13/13. you would have a 100 percent chance of getting a green marble
the probability is you'd get a green marble any other color is impossible. So, the probability is certain
100%
Probability of drawing a red marble = 4/16 = 1/4 Probability of drawing not a red marble = 1 - 1/4 = 3/4
1/3 or 33%