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On real numbers, (R={(a,b):|a-b|>0}). Why is (R) not reflexive?

Answer and explanation

Correct answer: Because (|a-a|=0), which is not greater than (0)

Step 1: For reflexivity, ((a,a)) must satisfy the rule. Step 2: (|a-a|=0), and (0>0) is false. Step 3: Self-distance is zero, so it fails a strict positive condition.

Related tags

Absolute ValueNot ReflexiveStrict ConditionSchool ExamReflexive RelationRelations And FunctionsMathematicsClass 12 Mcq

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