2. Types of Probablity

Complementary Events

Complementary events occur when there are just two events, and one event is exactly opposite to the other event. Hence, A∪A¯=setofsamplespaceA∪A¯=setofsamplespace

For an event with probability P(A)P(A), its complement is P(A¯)P(A¯) such that

Example: In an examination, the event of success and the event of failure are complementary events.

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