Kris is performing an experiment in math class using a bag of colored
blocks. He will draw one block out of the bag at a time and record its
color. He has three blue blocks, two red blocks, and one green block.
Which of the following represents the sample space of the bag?
1) blue, blue, blue
2) red, green, blue
3) blue-red, blue-green, red-green
4)blue, blue, blue, red, red, green