diff --git a/Week03/sequences_roca_ozdaman.py b/Week03/sequences_roca_ozdaman.py
new file mode 100644
index 00000000..1dce994a
--- /dev/null
+++ b/Week03/sequences_roca_ozdaman.py
@@ -0,0 +1,11 @@
+def remove_duplicates(seq:list) -> list:
+   return list(set(seq))
+
+def list_counts(seq: list) -> dict:
+    counts = {}
+    for item in seq:
+        counts[item] = counts.get(item, 0) + 1
+    return counts
+  
+def reverse_dict(d: dict) -> dict:
+    return {v: k for k, v in d.items()}