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[" 4.A relation "R" on the set of complex numbers defined by "],[Z_(1)RZ_(2)hArr(Z_(1)-Z_(2))/(Z_(1)+Z_(2))" is real then which of the following is "],[" not true? "],[[" (1) "R" is reflexive "," (2) "R" is symmetric "],[" (3) "R" is transitive "," (4) "R" is not equivalence "]]

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