diff --git a/Week03/sequences_beyza_saridas.py b/Week03/sequences_beyza_saridas.py
new file mode 100644
index 00000000..10e2c293
--- /dev/null
+++ b/Week03/sequences_beyza_saridas.py
@@ -0,0 +1,17 @@
+# Function to remove duplicates from a list
+def remove_duplicates(seq: list) -> list:
+    return list(set(seq))
+
+# Function to count occurrences of each item in a list
+def list_counts(seq: list) -> dict:
+    counts = {}
+    for item in seq:
+        if item in counts:
+            counts[item] += 1
+        else:
+            counts[item] = 1
+    return counts
+
+# Function to reverse keys and values of a dictionary
+def reverse_dict(d: dict) -> dict:
+    return {v: k for k, v in d.items()}