the probability is you'd get a green marble any other color is impossible. So, the probability is certain
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There is a probability of 3 that it will be blue.
1/3
4/8 or 1/2(probability of first draw) * 3/8(probability of second draw which is 12/64 or 3/16 of the given scenario.
1 chance in 10.10 %
it is 6/9 simplifyyou get 2/3.