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Which of the following is not an equivalence relation on Z?
OaRb -> a+b is an even integer
OaRb + a-b is an evern integer
OaRb - a<b
OaRb - a=b
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Step-by-step explanation:
the answer is OaRb - a=b
this above relation is not an equivalence relation because if a=b , then it is only reflexive and neither symmetric nor transitive
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