Answer:
0.0909 = 9.09%
Explanation:
Initially we have a total of 12 socks, where 4 are green, so the probability of grabbing a green socks is 4/12.
Then, as there is no replacement, we have 11 socks, where 3 are green, so the probability of grabbing again a green socks is 3/11
So the probability of both socks being green is:
P = (4/12) * (3/11) = 1/11 = 0.0909 = 9.09%