R= {(m,n):2|(m+n)} on Z.
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R= {(m,n):2|(m+n)} on Z. Let m ∈ Z. Then m – m = 0 is not greater than or equal to 7. Therefore mRm does not holds for all m in Z. and R is not reflexive. 2. Let m, n ∈ Z and mRn hold. m ...
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