Question 309573
2 red marbles , 4 green marbles , 4 blue marbles
total, there are 10 marbles
probability to get:
1st red marble = 2/10 = 0.2
then the red marble is put back in the bag, so the probability to get the 2nd red marble is same as the probability to get 1st red marble, that is 0.2


so, the probability to get 2 red marbles for this problem is 0.2 * 0.2 = 0.04