If A and B are mutually exclusive events with P(A)= 0.30 and P(B)= 0.40,then P(A or B)is:
A)0.10
B)0.12
C)0.70
D)None of these choices

Name: If A and B are mutually exclusive events with P(A)= 0.30 and P(B)= 0.40,then P(A or B)is: A)0.10 B)0.12 C)0.70 D)None of these choices
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Question

Quizplus · Accepted Answer

Mutually exclusive events cannot occur simultaneously, so P(A or B) can be found by simply adding the probabilities of A and B. 
P(A or B) = P(A) + P(B) = 0.30 + 0.40 = 0.70. Thus, the answer is C.

If a and B Are Mutually Exclusive Events with P(A)=