Mutually exclusive events cannot occur simultaneously.

互斥事件不能同时发生。

102. Mutually exclusive events can be described as either complementary or opposite.

互斥事件可以描述为互补的或相反的。

Addition Rule: The probability of the union of two or more mutually exclusive events is the sum of their individual probabilities.

加法规则：两个或多个互斥事件并集的概率是它们各自概率的总和。