Problem:
Compute the rank of
$\left(
\begin{array}{cccc}
 \frac{11}{8} & -\frac{13}{2} & \frac{75}{8} & \frac{5}{4} \\
 -\frac{1}{2} & \frac{3}{2} & -\frac{29}{8} & \frac{71}{8} \\
 \frac{37}{4} & -5 & -\frac{9}{8} & -\frac{9}{2} \\
\end{array}
\right)$.
Answer:
$3$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/rank_and_nullity/25562.txt'}