diff --git a/Problem1.py b/Problem1.py
new file mode 100644
index 0000000..8b75c19
--- /dev/null
+++ b/Problem1.py
@@ -0,0 +1,13 @@
+import pandas as pd
+
+def categorize_products(activities: pd.DataFrame) -> pd.DataFrame:
+    grouped = activities.groupby('sell_date')['product'].unique()
+    sorted_products = grouped.apply(sorted).apply(','.join)
+    num_sold = grouped.apply(len)
+    result = pd.DataFrame({
+        'sell_date': num_sold.index,
+        'num_sold': num_sold.values,
+        'products': sorted_products.values
+        })
+    result = result.sort_values(by='sell_date')
+    return result
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diff --git a/Problem2.py b/Problem2.py
new file mode 100644
index 0000000..3b2e574
--- /dev/null
+++ b/Problem2.py
@@ -0,0 +1,7 @@
+import pandas as pd
+
+def daily_leads_and_partners(daily_sales: pd.DataFrame) -> pd.DataFrame:
+    daily_sales=daily_sales.groupby(['date_id','make_name'])[['lead_id','partner_id']].nunique().reset_index()
+    daily_sales.columns=['date_id','make_name','unique_leads','unique_partners']
+    return daily_sales
+    
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diff --git a/Problem3.py b/Problem3.py
new file mode 100644
index 0000000..173b6b5
--- /dev/null
+++ b/Problem3.py
@@ -0,0 +1,6 @@
+import pandas as pd
+
+def actors_and_directors(actor_director: pd.DataFrame) -> pd.DataFrame:
+    df = actor_director.groupby(['actor_id','director_id']).agg(count =('director_id','count')).reset_index()
+    df = df[df['count'] >= 3]
+    return df[['actor_id','director_id']]
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