The total number of marbles in the bag is 3 + 3 + 3 = 9.
Since there are 3 green marbles in the bag, the probability of selecting a green marble is 3/9 = 1/3.
Therefore, the correct answer is: d. 1/3.
a marble is randomly selected from a bag containing 3 red marbles, 3 blue marbles, and 3 green marbles. what is the probability that the selected marble is green?
a. 1/2
b. 3
c. 1/9
d. 1/3
1 answer