Insert a symbol before the item

Question

I'm preparing a guide for my students and I want to put a symbol before the item’s symbol in the enumeration of the exercises for indicate that this exercise is more difficult, very similar that the math's books.

For example:

blah
blah

(*)3. blah

Welcome to TeX.sx! Does Modifying labels on some enumerated items help? — egreg, May 21 '13 at 22:23
Please wait for a reaction of op before closing this question. Must this question be closed one hour after asking? — Mensch, May 21 '13 at 23:17

score 7 · Accepted Answer · answered May 21 '13 at 22:35

\begin{enumerate}
\item 
Easy
\item 
Easy
\item [(*)\stepcounter{enumi}\arabic{enumi}.]
Hard
\item
Easy
\end{enumerate}

You will probably want to use an optional argument of \item as a short definition, e.g.

\def\Hitem{\item [(*)\stepcounter{enumi}\arabic{enumi}.]} % Hard item.

Insert a symbol before the item

1 Answers1