diff --git a/articles/Random variable - Wikipedia/Random variable - Wikipedia.pdf.txt b/articles/Random variable - Wikipedia/Random variable - Wikipedia.pdf.txt
new file mode 100644
index 0000000..698f688
--- /dev/null
+++ b/articles/Random variable - Wikipedia/Random variable - Wikipedia.pdf.txt	
@@ -0,0 +1 @@
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diff --git a/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml b/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml
new file mode 100644
index 0000000..dd74798
--- /dev/null
+++ b/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml	
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