Problem:
Compute the rank of
$\left(
\begin{array}{cc}
 -\frac{19}{2} & \frac{9}{2} \\
 \frac{15}{4} & -2 \\
\end{array}
\right)$.
Answer:
$2$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/rank_and_nullity/17107.txt'}