diff --git a/labs04/task01.py b/labs04/task01.py
index 88741a4..0719759 100644
--- a/labs04/task01.py
+++ b/labs04/task01.py
@@ -1,3 +1,15 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 
+def isNumeric(x):
+    isTrue = True
+    for i in range(len(x)):
+        if isinstance(x[i], (int , float )):
+            if isTrue == False:
+                pass
+        else:
+            isTrue = False
+    return isTrue
+
+print(isNumeric([1,4,5.4]))
+