Answer:
The correct answer option is 0.2.
Explanation:
We are given that there are 3 red marbles and 3 green marbles in an opaque bag.
If two marbles are chosen one after one without replacement, we are to find the probability of getting both green marbles.
P (1st green marble) =

P (2nd green marble) =

P (both green marbles) =
= 0.2