diff --git a/luis.md b/luis.md
new file mode 100644
index 0000000..2c6a9de
--- /dev/null
+++ b/luis.md
@@ -0,0 +1,6 @@
+const n = 2
+function sumOfNumbersBefore(n){
+    return (n * (n + 1)) / 2
+}
+
+console.log(sumOfNumbersBefore(n))
\ No newline at end of file