# If P(A)=0.5, P(B)=0.4, and A and B are mutually exclusive, Find P(A or B). P(A or B)=____

Question
Probability
If P(A)=0.5, P(B)=0.4, and A and B are mutually exclusive, Find P(A or B). P(A or B)=____

2021-01-20
Since A and B are mutually exclusive, we have
P(A or B)=P(A)+P(B)=0.5+0.4=0.9

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