Question

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

1 red marble
8 green marbles
9 blue marbles
Without looking in the hat, Ray takes out a marble at random. He replaces the marble and then takes out another marble from the hat. What is the probability that Ray takes out a blue marble in both draws?

Answer 1

9/18 so 1/2 i think   hope this helps

Answer 2

1/4

Explanation:

The probability of drawing a blue marble, the first time, is 9 blue out of total 18

9/18 =1/2

However,

The probability of drawing a blue marble The second time

1/2. X 1/2 = 1/4