please show all your work and explaination

Suppose a bag contains sixteen cubes. There are seven cubes with the number seven printed on them, there are five cubes with the number five printed on them, there are three cubes with the number three printed on them and one cube with the number one printed on it. Two cubes will randomly be selected from the bag, one at a time.

a. What is the sample space for this experiment with replacement? (5 points)

b. What is the sample space for this experiment without replacement? (