diff --git a/2nd/Questions_flashs/P2/QF_S45-1.pdf b/2nd/Questions_flashs/P2/QF_S45-1.pdf
index c25a1d7..3c10a29 100644
Binary files a/2nd/Questions_flashs/P2/QF_S45-1.pdf and b/2nd/Questions_flashs/P2/QF_S45-1.pdf differ
diff --git a/2nd/Questions_flashs/P2/QF_S45-1.tex b/2nd/Questions_flashs/P2/QF_S45-1.tex
index 0a6cf2e..acd33e2 100755
--- a/2nd/Questions_flashs/P2/QF_S45-1.tex
+++ b/2nd/Questions_flashs/P2/QF_S45-1.tex
@@ -6,7 +6,7 @@
 \date{}
 
 \begin{document}
-\begin{frame}{Questions flashs}
+\begin{frame}{Questions flash}
     \begin{center}
         \vfill
         2nd
diff --git a/2nd/Questions_flashs/P2/QF_S45-2.pdf b/2nd/Questions_flashs/P2/QF_S45-2.pdf
index 1c946f9..b417ab8 100644
Binary files a/2nd/Questions_flashs/P2/QF_S45-2.pdf and b/2nd/Questions_flashs/P2/QF_S45-2.pdf differ
diff --git a/2nd/Questions_flashs/P2/QF_S45-2.tex b/2nd/Questions_flashs/P2/QF_S45-2.tex
index acc7547..038c6ef 100755
--- a/2nd/Questions_flashs/P2/QF_S45-2.tex
+++ b/2nd/Questions_flashs/P2/QF_S45-2.tex
@@ -6,7 +6,7 @@
 \date{}
 
 \begin{document}
-\begin{frame}{Questions flashs}
+\begin{frame}{Questions flash}
     \begin{center}
         \vfill
         2nd