diff --git a/express/lib/random_function.js b/express/lib/random_function.js
new file mode 100644
index 0000000..569a761
--- /dev/null
+++ b/express/lib/random_function.js
@@ -0,0 +1,7 @@
+
+function getRandomNum(min, max) {
+        return Math.random() * (max - min) + min;
+}
+
+
+