diff --git a/4. Hafta/4. Hafta.omv b/4. Hafta/4. Hafta.omv
new file mode 100644
index 0000000..7fc45eb
Binary files /dev/null and b/4. Hafta/4. Hafta.omv differ
diff --git a/4. Hafta/4. Hafta.pdf b/4. Hafta/4. Hafta.pdf
new file mode 100644
index 0000000..a100af2
Binary files /dev/null and b/4. Hafta/4. Hafta.pdf differ
diff --git a/4. Hafta/dataset.omv b/4. Hafta/dataset.omv
new file mode 100644
index 0000000..673ada9
Binary files /dev/null and b/4. Hafta/dataset.omv differ