A crate has a length of 19 1/3 feet, a width of 7 2/3 feet, and a height of 7 5/6 feet. What is the volume?

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?