1.     There are 5 tiles

2.     1 out of 5 is green

3.     4 out of 5 are white

4.     Probability of green = 1 out of 5 = 0.20

5.     Probability of white = 4 out of 5 = 0.80

6.     Probability not white = 1 out of 5 = 0.20

7.     Probability white or green = 5 out of 5 = 1.0

8.     Probability of not green = 4 out of 5 = 0.80