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Which of the following binary operations is commutative in the set of integers?


Question

Which of the following binary operations is commutative in the set of integers?

Options

A) \(a – b = a – 2b\)

B) \(a \cdot b = a + b – ab\)

C) \(a – b = a^2 + b\)

D) \(a \cdot b = \frac{a(b + 1)}{2}\)

The correct answer is B.


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