Which of the following numbers is a rational number? surd 2 -5/8 pi sqrt (3)

The correct answer is $-5/8$.<br /><br />A rational number is a number that can be expressed as the ratio of two integers, where the denominator is not zero. In this case, $-5/8$ is a rational number because it can be expressed as the ratio of two integers, $-5$ and $8$.<br /><br />The other options are not rational numbers. $\surd 2$ and $\pi$ are irrational numbers, which means they cannot be expressed as the ratio of two integers. $\sqrt{3}$ is also an irrational number.