diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 10fae4c..0000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.gitignore b/.gitignore
index b6e4761..99efc91 100644
--- a/.gitignore
+++ b/.gitignore
@@ -127,3 +127,4 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+.DS_Store
diff --git a/Exercises/Worksheet_2_Qubit_Fundamentals_Questions.pdf b/Exercises/Worksheet_2_Qubit_Fundamentals_Questions.pdf
index afdc331..76463a7 100644
Binary files a/Exercises/Worksheet_2_Qubit_Fundamentals_Questions.pdf and b/Exercises/Worksheet_2_Qubit_Fundamentals_Questions.pdf differ