=+10.2. On the o-field of all subsets of Q={1,2 ,... } put u( A) = Eke 42

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=+10.2. On the o-field of all subsets of Q={1,2 ,... } put u( A) = Eke 42 -* if A is finite and u( A) = otherwise. Is u finitely additive? Countably additive?

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