Pls help me its algebra natoin

a- q1 is 13
b- q3 is 21.5
c- iqr is 9
d- no outliers

The number if 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?