diff --git a/Week03/pyramid_ahmet_hakan_yildirim.py b/Week03/pyramid_ahmet_hakan_yildirim.py
new file mode 100644
index 00000000..d1747ea6
--- /dev/null
+++ b/Week03/pyramid_ahmet_hakan_yildirim.py
@@ -0,0 +1,10 @@
+def calculate_pyramid_height(number_of_blocks):
+    total = 0
+    height = 0
+    for i in range(1, number_of_blocks + 1):
+        total += i
+        if total > number_of_blocks:
+            break
+        else:
+            height = i
+    return height
diff --git a/Week03/sequences_ahmet_hakan_yildirim.py b/Week03/sequences_ahmet_hakan_yildirim.py
new file mode 100644
index 00000000..fb239ae6
--- /dev/null
+++ b/Week03/sequences_ahmet_hakan_yildirim.py
@@ -0,0 +1,23 @@
+def remove_duplicates(seq: list) -> list:
+    seen = set()
+    result = []
+    for item in seq:
+        if item not in seen:
+            seen.add(item)
+            result.append(item)
+    return result
+
+def list_counts(seq: list) -> dict:
+    result = {}
+    for item in seq:
+        if item in result:
+            result[item] += 1
+        else:
+            result[item] = 1
+    return result
+
+def reverse_dict(d: dict) -> dict:
+    reversed_d = {}
+    for key, value in d.items():
+        reversed_d[value] = key
+    return reversed_d