diff --git a/task1/Kholodov_1_1.sql b/task1/Kholodov_1_1.sql
new file mode 100644
index 00000000..d480ccff
--- /dev/null
+++ b/task1/Kholodov_1_1.sql
@@ -0,0 +1,7 @@
+SELECT customer_rk,
+	(CASE
+		WHEN middle_nm LIKE '%ИЧ' THEN 'M'
+        WHEN middle_nm LIKE '%А' THEN 'F'
+    END) AS gender
+FROM cd_customers
+WHERE valid_to_dttm = '5999-01-01'
\ No newline at end of file
diff --git a/task1/Kholodov_1_2.sql b/task1/Kholodov_1_2.sql
new file mode 100644
index 00000000..5cc0b740
--- /dev/null
+++ b/task1/Kholodov_1_2.sql
@@ -0,0 +1,5 @@
+SELECT monthly_income_amt 
+FROM cd_customers
+WHERE valid_to_dttm >= '2014.01.01' AND valid_from_dttm < '2015.01.01'
+ORDER BY monthly_income_amt DESC
+LIMIT 10;
\ No newline at end of file
diff --git a/task1/Kholodov_1_3.sql b/task1/Kholodov_1_3.sql
new file mode 100644
index 00000000..ab421a1d
--- /dev/null
+++ b/task1/Kholodov_1_3.sql
@@ -0,0 +1,5 @@
+SELECT DISTINCT 
+	CONCAT(SUBSTRING(birth_dt, 1, 3), '0-e') as generation 
+FROM cd_customers
+WHERE valid_to_dttm = '5999-01-01'
+ORDER BY generation DESC;
\ No newline at end of file