Probability Basicsmedium
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For two events XX and YY, it is known that P(X)=0.55P(X) = 0.55, P(Y)=0.45P(Y) = 0.45, and P(XY)=0.85P(X \cup Y) = 0.85. What is the probability P(XcYc)P(X^c \cap Y^c)?