This calculator finds the probabilities associated with three events

*A*,*B*, and*C*.Simply enter the probabilities for the three events in the boxes below and then click the “Calculate” button.

P(all events occur) = **0.045000**

P(None of the events occur) = **0.210000**

P(At least one event occurs) = **0.790000**

P(Exactly one event occurs) = **0.475000**

What would be the formula for 7 events/variables?