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[" 8.(i) If "aN={ax:x in N}" ,then find ...

[" 8.(i) If "aN={ax:x in N}" ,then find "3N nn2N" ."],[" (ii) If "A={2,3,4},B={4,5}" and "C={5,6,7},],[" then find "A uu(B nn C)" ."],[" (iii) If "X={1,3,5,7,9},Y={1,2,3,4,5}" ,then "],[" find "(X-Y uu X" ."]

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