diff --git a/exam/ex.tex b/exam/ex.tex
index 41bb5b1..be5ebf7 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -106,14 +106,23 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \item \textbf{(16 points)} 
   \begin{enumerate}
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
   \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -121,12 +130,19 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \item \textbf{(16 points)} 
   \begin{enumerate}
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
   \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -134,18 +150,31 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \item \textbf{(17 points)} 
   \begin{enumerate}
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
   \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -153,20 +182,35 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \item \textbf{(33 points)} 
   \begin{enumerate}
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
     \item \TODO
+
   \end{enumerate} 
 
 \end{enumerate}