diff --git a/4_soutions.sql b/4_soutions.sql
index 2d1cec0..6b264c6 100644
--- a/4_soutions.sql
+++ b/4_soutions.sql
@@ -36,14 +36,12 @@ SELECT continent, name FROM world x WHERE name <= ALL(SELECT name FROM world y W
 
 --9. Find the continents where all countries have a population <= 25000000. Then find the names of the countries associated with these continents. Show name, continent and population.
 
-SELECT name, continent, population FROM world WHERE continent IN (SELECT continent FROM world  x WHERE 25000000 >= (SELECT MAX(population) FROM world y WHERE x.continent = y.continent));
-or
-SELECT y.name, y.continent, y.population
-FROM world AS y
-JOIN
-(SELECT continent,max(population)
+SELECT name, continent, population
 FROM world
-GROUP BY continent
-HAVING max(population) <= 25000000) AS x
-ON y.continent = x.continent
+WHERE continent IN (
+  SELECT continent
+  FROM world
+  GROUP BY continent
+  HAVING MAX(population) <= 25000000
+)