whether the following sets are open: (Justify your answer.) 3,5 (b) (-∞, 0) U (0, 1) (d) (-∞,0) U [0, 1) (f) (-∞,0) U (0, 1] (h) R - {1,2,3} (j) {ne N} U{0} (1) Qn (0,1) 389} -00 [01 BEN 1001

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Q: f A= {1,2,3,4,5,6,7,8}    B= {1,2,3,4,5}    C= {7,8,9,10}    U= {1,2,3,4,5,6,7,8,9,10} What is A∩

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Q: I dont understand

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