A jar has
12
12 marbles and
4
4 of them are green. You pull 2 marbles without replacement. What is the probability that both are green? Write your answer as a fraction. You do not need to simplify.
The probability of pulling a green marble on the first draw is 4/12 = 1/3.
After pulling a green marble, there are now 3 green marbles left and a total of 11 marbles left in the jar.
The probability of pulling another green marble on the second draw is 3/11.
The probability of both marbles being green is (1/3) * (3/11) = 1/11.
Therefore, the probability that both marbles are green is 1/11.