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On (A=\mathbb{R}\setminus{0}), (a*b=\frac{ab}{2}). Which statement is correct?

Answer and explanation

Correct answer: It is closed and has identity (2)

Step 1: The product of two non-zero real numbers is non-zero, so (\frac{ab}{2}) is also non-zero. Step 2: (\frac{ae}{2}=a\Rightarrow e=2), which belongs to the set. Step 3: For non-zero sets, ensure the result cannot become zero.

Related tags

Binary OperationClosureIdentityNonzero Real NumbersBinary OperationsRelations And FunctionsMathematicsClass 12 Mcq

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