CN 8-1 – TheWorksheets.CoM – Page 2

CN 8-1 Probability of Simple Events.notebook - Commack Schools

sum of the probability of an event and its complement is 1 or 100%. Tutor Example 3. Find the probability of not rolling a 6 in Example 1. The probability of not rolling a 6 and the probability of rolling a 6 are complementary. So, the sum of the probabilities is 1. P(6) + P(not 6) = 1 P(6) and P(not 6) are complements. Got It?