Update README.md

README.md

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 `AutoGen.Net` implementation of [`AI-Agentic-Design-Patterns-with-AutoGen`](https://www.deeplearning.ai/short-courses/ai-agentic-design-patterns-with-autogen/)
 
 > [!Note]
-> Some examples are not exactly match what python AutoGen does. This is because some libraries are not available in .NET. For example, we use Tic Tac Toe game as a tool to demonstrate the concept of tool use where the python one use Chess game. This is because the `chess` library is not available in .NET.
+> Some examples are not exactly match what python AutoGen does. This is because some libraries are not available in .NET. For example, we use Tic Tac Toe game as a tool to demonstrate the concept of tool use where the python one use Chess game. This is because the `chess` library is not available in .NET. Another case is in Lesson 5, where python ones use financial analysis to demostrate code interpreter usage. In .Net AutoGen, however, I replace the financial analysis with math problem solving because of lacking library support in .Net eco-system.
 
 ## Console Apps
 - [x] [Lesson 1: Multi-Agent Conversation and Stand-up Comedy](./L1_MultiAgent_Conversation_and_Standup_Comedy/)
 - [x] [Lesson 2: Sequential Chats and Customer Onboarding](./L2_Sequential_Chats_and_Customer_Onboarding/)
 - [x] [Lesson 3: Reflection_and_Blogpost_Writing](./L3_Reflection_and_Blogpost_Writing/)
 - [x] [Lesson 4: Tool_Use_and_Conversational_Tic_Tac_Toe](./L4_Tool_Use_and_Conversational_Tic_Tac_Toe/)
-- [x] [Lesson 5: Coding_and_Math_Problem_Solving](./L5_Coding_and_Math_Problem_Solving/) (We didn't use Financial Analysis as example here because corresponding library is not available in .NET)
+- [x] [Lesson 5: Coding_and_Math_Problem_Solving](./L5_Coding_and_Math_Problem_Solving/)
 - [x] [Lesson 6: L6-Planning_and_Stock_Report_Generation](./L6-Planning_and_Stock_Report_Generation/)
 
 ## Notebooks