--- a/slides/slides10.tex	Tue Dec 04 00:33:26 2018 +0000
+++ b/slides/slides10.tex	Sat Dec 29 10:30:27 2018 +0000
@@ -63,8 +63,8 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
 
-  \Large\bf Are there more strings in \bf{$L(a^*)$} or
-  \bf{$L((a + b)^*)$}?
+  \Large\bf Are there more strings in \bl{$L(a^*)$} or
+  \bl{$L((a + b)^*)$}?
 
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%