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A relation R on set of complex numbers d...

A relation R on 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 ?

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The correct Answer is:
Thus , ` z_(1) Rz_(2) " and " z_(2) Rz_(3) rArr r_(a) Rz_(3) . ` [transitive]
Hence , R is an equivalence relation .
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