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On (A={1,2,3}), (a*b=a) is given. Why is this operation closed in (A)?

Answer and explanation

Correct answer: Because the result is always the first element

Step 1: If (a\in A), then (a*b=a) is also in (A). Step 2: So the result never goes outside (A). Step 3: For closure, check whether outputs remain inside the set.

Related tags

ClosureBinary OperationConceptBinary OperationsRelations And FunctionsMathematicsClass 12 Mcq

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