A jar has 19 marbles and 5 of them are green. You pull 3 marbles without replacement. What is the probability that all are green? Write you answer as a fraction. You don’t need to simplify.
The probability of drawing a green marble on the first pull is 5/19.
The probability of drawing a green marble on the second pull is 4/18 (since there is one less marble in the jar).
The probability of drawing a green marble on the third pull is 3/17.
Therefore, the probability that all 3 marbles are green is (5/19) * (4/18) * (3/17) = 60/581.