There are 28 bikes 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 10 bikes getting sold?
The probability of 10 bikes getting sold \(=\)
(II) What is the probability of 17 bikes getting sold?
The probability of 17 bikes getting sold \(=\)
[Note: Submit all the answers in fraction without solving].