Question

The number of marbles of different colors stored in a hat is listed below:

4 red marbles
10 green marbles
7 blue marbles
Without looking in the hat, Dan takes out a marble at random. He replaces the marble and then takes out another marble from the hat. What is the probability that Dan takes out a blue marble in both draws?
2/21
1/9
1/2
2/3

Answer 1

The answer would be a 1/9 chance of him picking two blue marbles in a row.