2. Calculate the probability of the event

If the number of an event of a certain experiment (\(n(E)\)) \(=\) 6, and the total number of simple space (\(n(S)\)) \(=\) 15, then calculate the probability of this experiment.

 

The probability of this experiment \(=\) $\frac{i}{i}$

[Note: Submit the answer in fraction without solving].