diff --git a/Algo/Courses/Chapter 6 - Lists (Exercises).md b/Algo/Courses/Chapter 6 - Lists (Exercises).md
index 4c1029b..75d7761 100644
--- a/Algo/Courses/Chapter 6 - Lists (Exercises).md	
+++ b/Algo/Courses/Chapter 6 - Lists (Exercises).md	
@@ -54,7 +54,7 @@ val search 'a -> 'a list -> bool = <fun>
 			| (_::t, n) -> nthrec(t, n-1)
 		in
 			ntrec(l, n);;
-val nth 'a list -> 'a -> int = <fun>
+val nth 'a list -> int -> 'a = <fun>
 
 ```
 
@@ -66,6 +66,18 @@ val nth 'a list -> 'a -> int = <fun>
 	| hd :: tl -> 
 		let max_tail = max_value tl in 
 		if hd > max_tail then hd else max_tail;;
+
+(* v2 *)
+# let max_value list = 
+	if list = [] then
+		failwith "la list est vide"
+	else 
+		let rec mv = match list with
+			| [x] -> x 
+			| hd :: tl -> 
+				let max_tail = max_value tl in 
+				if hd > max_tail then hd else max_tail
+		in mv list;;
 ```
 
 ## 1.6 - Bonus second
@@ -90,7 +102,7 @@ val nth 'a list -> 'a -> int = <fun>
 ```
 
 ## Exercise 2.1
-```Ocaml
+```
 let rec arith_list n a r =