In Walter's closet there are 7 shirts where 1 are green and 8 pants where 1 are green.

What is the probability that Walter's outfit will be all green if he gets dressed in the dark? Round to the nearest 10th of a percent

0.018 = 1.8%

Step-by-step explanation:

There are 7 choices of shirt. Each of those can be paired with any of the 8 choices of pants, for a total of 7*8 = 56 possible pairings of shirt and pants.

Of those, only one pairing is green/green. So, assuming all pairings are equally likely when getting dressed in the dark, the probability of an all-green outfit is 1/56 ≈ 0.01786 ≈ 1.8%.