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On real numbers, (aRb) is defined when (a<b+1). Is this relation transitive?

Answer and explanation

Correct answer: No, because (3R2.5) and (2.5R2) hold but (3R2) does not

Step 1: (3<2.5+1), so (3R2.5) is true. Also (2.5<2+1), so (2.5R2) is true. Step 2: Transitivity would require (3R2), but (3<2+1) is false. Step 3: When a fixed number is added in an inequality relation, using a counterexample is safer.

Related tags

Inequality CounterexampleNon TransitiveReal NumbersClass 12Transitive RelationRelations And FunctionsMathematicsClass 12 Mcq

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