diff --git a/src/students/Week_2_7/Lecture_2_7.pdf b/src/students/Week_2_7/Lecture_2_7.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..01661a953da20a58d9594fffd434898aead7c310
Binary files /dev/null and b/src/students/Week_2_7/Lecture_2_7.pdf differ