Question

Given an event a, the event that a does not occur is called the ______ of a?

1) complement
2) opposite
3) inverse
4) negation

Answer 1

The event that a does not occur is called the complement of a.

Step-by-step explanation:

The event that a does not occur is called the complement of a.

The complement of event A, denoted as A', consists of all outcomes that are not in A. For example, if A is the event of getting an even number in a dice throw, A' would be the event of getting an odd number.

The complement of an event is an important concept in probability theory as it is used to calculate the probability of an event not occurring.