diff --git a/fundamentals-of-ai-and-kr/main.pdf b/fundamentals-of-ai-and-kr/main.pdf
index c60d016..f576abd 100644
Binary files a/fundamentals-of-ai-and-kr/main.pdf and b/fundamentals-of-ai-and-kr/main.pdf differ
diff --git a/machine-learning-and-data-mining/main.pdf b/machine-learning-and-data-mining/main.pdf
index e145a9f..57b5e40 100644
Binary files a/machine-learning-and-data-mining/main.pdf and b/machine-learning-and-data-mining/main.pdf differ
diff --git a/statistical-and-mathematical-methods-for-ai/main.pdf b/statistical-and-mathematical-methods-for-ai/main.pdf
index d33c9e0..0b232b5 100644
Binary files a/statistical-and-mathematical-methods-for-ai/main.pdf and b/statistical-and-mathematical-methods-for-ai/main.pdf differ