Update README.md

Author: HUMANIAM

README.md

@@ -33,6 +33,11 @@ there are many reasons push me to spend good time with algorithms and their impl
 		 	- [specialization problems](https://github.com/HUMANIAM/Algorithms_DataStructure_Specialization/tree/master/Algorithms%20Toolbox/W2)
 		 	- [more probelems](https://github.com/HUMANIAM/Competitve-Programming-Problems/tree/master/Fibonancci%20series)
 
+	- **Week 2** : 
+		- **Fibonancci Numbers and other maths Functions like gcd(), lcm()**
+			- [specialization problems](https://github.com/HUMANIAM/Algorithms_DataStructure_Specialization/tree/master/Algorithms%20Toolbox/W2)
+		 	- [more probelems](https://github.com/HUMANIAM/Competitve-Programming-Problems/tree/master/Fibonancci%20series)
+
 	- **Week 3** :
 		- **Gready algorithms**
 			- [specialization problems](https://github.com/HUMANIAM/Algorithms_DataStructure_Specialization/tree/master/Algorithms%20Toolbox/W3)