There are 28 cars in a showroom which are ready to sell with numbers from \(1\) to 28 marked on each of them. Then answer the following questions.
Questions:
(I) What is the probability of the car with number 6 getting sold?
The probability of the car with number 6 getting sold \(=\)
(II) What is the probability of the car with number 18 getting sold?
The probability of the car with number 18 getting sold \(=\)
[Note: Submit all the answers in fraction without solving].