diff --git a/Exam.md b/Exam.md
index 68f25cb..934abb2 100644
--- a/Exam.md
+++ b/Exam.md
@@ -1,20 +1,12 @@
 ## Multiple insertion
 ```
-# let insert_mult n x lst =
-	if n <= 0 then
-		invalid_arg "insert_mult: n must be > 0"
-	else
-	    let rec aux count = function
-	      | [] -> []
-	      | e::t ->
-	          if (count = n) then
-		        e :: x :: aux 1 t
-	          else
-		        e :: aux (count + 1) t
-	    in
-		    match lst with
-			    | [] -> []
-			    | z::f -> z :: aux 0 f
-val insert_mult: int -> 'a -> 'a list -> 'a list = <fun>
+# let rec remove_x x = function
+	| [] -> []
+	| e::t -> 
+		if (e = x) then
+			remove_x x t
+		else e::remove_x x t
+
+val remove_x: 'a -> 'a list -> 'a list
 ```