alleryWhich of the following is a rational number?
A$\sqrt{7}$
B$\pi$
C$\frac{-3}{8}$
D$\sqrt{2}$
Answer & Solution
Correct answer: C. $\frac{-3}{8}$
A rational number can be written in the form $p/q$ where $p$ and $q$ are integers and $q\ne 0$.
$\frac{-3}{8}$ is of that form, while $\sqrt{7}$, $\pi$, and $\sqrt{2}$ are irrational.
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