Katherine is required to wear uniforms to school. Katherine has a green shirt, a white shirt, a gray shirt, and a blue shirt. She has blue pants, green pants, gray pants, black pants, and white pants. Part A
If one shirt and one pair of pants is selected at random, how many different possible outcomes does she have?

2

9

20

36

Part B
Katherine spills grape juice on her gray shirt and can no longer wear it.

Now, how many possible outcomes does she have by randomly selecting one shirt and one pair of pants?

8

15

20

24