diff --git a/exam/ex.tex b/exam/ex.tex
index c234136..8880809 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -33,8 +33,9 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%% SYMMETRIC - LITERATURE %%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\item \textbf{(18 points)} 
-    \begin{enumerate}
+  \item \textbf{(18 points)} 
+  \begin{enumerate}
+    \item 
     \item \TODO
     \item \TODO
     \item \TODO
@@ -45,14 +46,13 @@
     \item \TODO
     \item \TODO
     \item \TODO
-    \item \TODO
-    \end{enumerate}
+  \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%% SYMMETRIC - KEYED %%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\item \textbf{(16 points)} 
-    \begin{enumerate}
+  \item \textbf{(16 points)} 
+  \begin{enumerate}
     \item \TODO
     \item \TODO
     \item \TODO
@@ -61,26 +61,26 @@
     \item \TODO
     \item \TODO
     \item \TODO
-    \end{enumerate}
+  \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%% SYMMETRIC - UNKEYED %%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\item \textbf{(16 points)} 
-    \begin{enumerate}
+  \item \textbf{(16 points)} 
+  \begin{enumerate}
     \item \TODO
     \item \TODO
     \item \TODO
     \item \TODO
     \item \TODO
     \item \TODO
-    \end{enumerate}
+  \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%% ASYMMETRIC - LITERATURE %%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\item \textbf{(17 points)} 
-    \begin{enumerate}
+  \item \textbf{(17 points)} 
+  \begin{enumerate}
     \item \TODO
     \item \TODO
     \item \TODO
@@ -93,13 +93,13 @@
     \item \TODO
     \item \TODO
     \item \TODO
-    \end{enumerate}
+  \end{enumerate}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%% ASYMMETRIC - SECURITY %%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\item \textbf{(33 points)} 
-    \begin{enumerate}
+  \item \textbf{(33 points)} 
+  \begin{enumerate}
     \item \TODO
     \item \TODO
     \item \TODO
@@ -114,8 +114,7 @@
     \item \TODO
     \item \TODO
     \item \TODO
-    \end{enumerate} 
-
+  \end{enumerate} 
 
 \end{enumerate}