diff --git a/qualdev/debog/exo7.ts b/qualdev/debog/exo7.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eb17d6372bd8716db3e9efb0d6da4b2013dbd727
--- /dev/null
+++ b/qualdev/debog/exo7.ts
@@ -0,0 +1,5 @@
+deb7(5, 3);
+
+function deb7(x: number, y: number): number {
+    return x * y;
+}
\ No newline at end of file