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On real numbers, (a*b=a+b+ab). Is this operation commutative?

Answer and explanation

Correct answer: Yes

Step 1: Write (a*b=a+b+ab). Step 2: (b*a=b+a+ba), and addition and multiplication do not change by order. Step 3: If the expression is symmetric in (a) and (b), commutativity is often easy to identify.

Related tags

Binary OperationsCommutative OperationAlgebraClass 12Relations And FunctionsMathematicsClass 12 Mcq

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