In a contest, players must take 3 balls.
There are 3 green balls, 2 blue and one white.
If the third ball is white, the player pass to the second stage.
If the first 2 balls are the same color and the third white, the player pass automatically to the third stage.
A player had automatically passed from first to third stage.
What is the probability of the first 2 balls taken be blue?
I don't have the correct solution
My answer was 2/5