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If A = { 4 , 5, 8 ,12} B = {1,4,6,9} and C = {1 , 2 ,3 , 4} find (i) A - (B - A) (ii)A - (C -B). |
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Answer» I. A-B = (4,5,8,12)-(1,4,6,9) =(5,8,12) II. B-C =(1,4,6,9)-(1,2,4,7,8,10) =(6,9) III. A-C =(4,5,8,12)-(1,2,4,7,8,10) =(5,12) IV. A-(B-A) =(4,5,8,12)-[(1,4,6,9)-(4,5,8,12)] =(4,5,8,12)-(1,6,9) =(4,5,8,12) V. A-(C-B) =(4,5,8,12)-[(1,2,4,7,8,10)-(1,4,6,9)] =(4,5,8,12)-(2,7,8,10) =(4,5,12) |
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