What is the theoretical probability (as a decimal rounded to the nearest hundredths place) of wearing one unique outfit?

For a theoretical probability we need results of experiments

To round a number to the nearest hundredth , look at the next place value to the right (the thousandths this time). Same deal: If it's 4 or less, just remove all the digits to the right. If it's 5 or greater, add 1 to the digit in the hundredths place, and then remove all the digits to the right.

b) the dogs need to shift their focus to human scent.