diff --git a/pfb.md b/pfb.md
index 6a0a4ed..761594e 100755
--- a/pfb.md
+++ b/pfb.md
@@ -576,6 +576,7 @@ False
 False
 ```
 
+Note: Find out more about [bool()](https://www.scaler.com/topics/bool-in-python/).
 
 ### Logic: Control Statements