Wyznacz zbiór (A n B) \ (B u C) , jeżeli A = (- 1;2); B = < 0;1); C = (- ¥ ;3 >
A n B = <0;1)B u C = (-∞;3>(A n B) - (B u C) = zbiór pusty
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A n B = <0;1)
B u C = (-∞;3>
(A n B) - (B u C) = zbiór pusty