4. The number of events for this experiment

Consider the sample space for an experiment (\(n(S)\)) \(=\) 10, and the probability of the experiment (\(P(E)\)) \(=\) 0.7, then calculate the number of events for this experiment.

 

  

The number of event for this experiment (\(n(E)\)) \(=\) .

[Note: Insert the answer as a whole number].