The value written as 2/7 is a rational number and the other options are irrational numbers.
<h3>What is a rational number?</h3>
A rational number is a number that does not end in a non terminating decimal. Surd forms as well as the value pi are all irrational numbers. We must note that the option that has no surd form or pi as a denominator is a rational number.
Hence; the value written as 2/7 is a rational number and the other options are irrational numbers.