diff --git a/problem1 b/problem1
new file mode 100644
index 0000000..46eaca4
--- /dev/null
+++ b/problem1
@@ -0,0 +1,9 @@
+import pandas as pd
+
+def categorize_products(activities: pd.DataFrame) -> pd.DataFrame:
+    activities = activities.groupby('sell_date')['product'].agg(
+        [('num_sold','nunique'),
+        ('products', lambda x: ','.join(sorted(x.unique())))
+        ]
+    ).reset_index()
+    return activities
diff --git a/problem2 b/problem2
new file mode 100644
index 0000000..563d72f
--- /dev/null
+++ b/problem2
@@ -0,0 +1,9 @@
+import pandas as pd
+
+def daily_leads_and_partners(daily_sales: pd.DataFrame) -> pd.DataFrame:
+    result = daily_sales.groupby(['date_id', 'make_name']).agg(
+        unique_leads=('lead_id', 'nunique'),
+        unique_partners=('partner_id', 'nunique')
+    ).reset_index()
+
+    return result.sort_values(['date_id', 'make_name'])
diff --git a/problem3 b/problem3
new file mode 100644
index 0000000..c65f9d4
--- /dev/null
+++ b/problem3
@@ -0,0 +1,7 @@
+import pandas as pd
+
+def actors_and_directors(actor_director: pd.DataFrame) -> pd.DataFrame:
+    coorporated = actor_director.groupby(['actor_id','director_id']).size().reset_index(name='count')
+    print(coorporated)
+    coorporated = coorporated[coorporated['count']>=3]
+    return coorporated[['actor_id', 'director_id']]