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Х є [0, 1, 2, 3, 4],
Р(Х=0)=0,2, Р(Х=1)=0,2, Р(Х=2)=0,3, Р(Х=3)=0,2, Р(Х=4)=0,1.
У є [0, 1],
Р(У=0)=0,65, Р(У=1)=0,35.
Чому дорівнює E(X + Y) ?