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On (A={1,2,3}), (a*b=b) is defined. Which statement is correct?

Answer and explanation

Correct answer: Associative but not commutative

Step 1: (a*b=b) and (b*a=a), so it is not commutative in general. Step 2: ((a*b)*c=b*c=c) and (a*(b*c)=a*c=c), so it is associative. Step 3: For projection-type operations, carefully observe which element is returned.

Related tags

Binary OperationsAssociativeRight ProjectionRelations And FunctionsMathematicsClass 12 Mcq

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