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please a) Let X and Y are events in a sample space S and suppose that PCX)=0.30, P(Y)=0.75. and P(X'Y') = 0.4. What is P(XU

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a) Let X and Y are events in a sample space S and suppose that PCX")=0.30, P(Y)=0.75. and P(X'Y') = 0.4. What is P(XU Y)? (4 marks)

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