The sum of probabilities of all elementary events is one
- The sum of probabilities of all elementary events is one true or false
- The sum of probabilities of all the elementary events of an experiment is one
- The sum of probabilities of all the elementary events of an experiment is one true or false
- Probability of two events
- Probability of two events happening at the same time
- Solving problems involving probability of events
- Probability of event
- Rule of complementary events