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On integers, (a*b=a+b+1) is defined. Is this operation closed?

Answer and explanation

Correct answer: Yes because the result is always an integer

Step 1: The sum of two integers is an integer. Step 2: Adding (1) still gives an integer. Step 3: For closure, only check whether the result stays in the same set.

Related tags

ClosureIntegersBinary OperationsRelations And FunctionsMathematicsClass 12 Mcq

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