Which of the following binary operations is not commutative?

Question 1 Report

Which of the following binary operations is not commutative?

\(a * b = \frac{1}{a} + \frac{1}{b}\)

\(a * b = a + b - ab\)

\(a * b = 2a + 2b + ab\)

\(a * b = a - b + ab\)

Binary Operations

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