Two or more events are said to be mutually exclusive if they cannot occur at the same time.
In other words, events that have no outcomes in common are said to be mutually exclusive events or disjoint events.
If two events A and B are mutually exclusive, then the probability of the occurrence of A or B is the sum of the their individual probabilities
.
A six-sided die is rolled once.
Event A : rolling an odd number
Event B : rolling an even number
Events A and B are mutually exclusive, because they cannot occur at the same time.

A. 
B. 
C. 
D. 
Correct Answer: A
Step 1:
when A and B are mutually exclusive events.
Step 2: 
Q1: Which of the following pairs of events are mutually exclusive when rolling a six-sided die?
Q2: If events A and B are mutually exclusive, and P(A) = 0.3 and P(B) = 0.4, what is P(A or B)?
Q: Are independent events always mutually exclusive?
A: No, independent events can occur simultaneously. Mutually exclusive events cannot.
Q: If two events are mutually exclusive, what is the probability of their intersection?
A: The probability of the intersection of two mutually exclusive events is 0.