Question 1148073
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If  A and B are mutually exclusive, it means that the events A and B are DISJOINT, &nbsp;i.e. &nbsp;CAN &nbsp;NOT &nbsp;occur simultaneously. 


Hence,


    P(A or B) = P(A) + P(B) = 0.7 + 0.1 = 0.8.
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Solved, explained and completed.



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