latex enumerate custom numerical order

Question

are there any simple: almost a single liner latex commands to make enumerate count in a weird order for instance that of a homework assignment?

Ex. 1, 5, 6, 9, 10, 13, 16

Answer 1

Yes, you can do it easily with:

\begin{enumerate}
  \item[1] text text...
  \item[5] text text...
  \item[6] text text...
  \item[9] text text...
\end{enumerate}