Problem:
Compute the rank of
$\left(
\begin{array}{cc}
 -\frac{71}{16} & \frac{65}{8} \\
 -\frac{11}{16} & -\frac{61}{16} \\
 \frac{15}{8} & -\frac{67}{8} \\
\end{array}
\right)$.
Answer:
$2$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/rank_and_nullity/2768.txt'}