diff --git a/1/PAR/ej-conversion.pdf b/1/PAR/ej-conversion.pdf
index d8395c0..c8f225c 100644
Binary files a/1/PAR/ej-conversion.pdf and b/1/PAR/ej-conversion.pdf differ
diff --git a/1/PAR/ej-conversion.tex b/1/PAR/ej-conversion.tex
index c5a826e..872bd4f 100644
--- a/1/PAR/ej-conversion.tex
+++ b/1/PAR/ej-conversion.tex
@@ -1,4 +1,4 @@
-\documentclass[12pt]{article}
+\documentclass[12pt, a4paper]{article}
 
 \title{Ejercicios de Cambio de Base Numérica}
 \author{Nicolás A. Ortega Froysa}