diff --git a/13-loops/exercises/03-sum-up-to-n/solution/main.go b/13-loops/exercises/03-sum-up-to-n/solution/main.go
index 209e706..95ba14f 100644
--- a/13-loops/exercises/03-sum-up-to-n/solution/main.go
+++ b/13-loops/exercises/03-sum-up-to-n/solution/main.go
@@ -14,7 +14,7 @@ import (
 )
 
 func main() {
-	if len(os.Args) < 3 {
+	if len(os.Args) != 3 {
 		fmt.Println("gimme two numbers")
 		return
 	}
diff --git a/13-loops/exercises/06-infinite-kill/solution/main.go b/13-loops/exercises/06-infinite-kill/solution/main.go
index a5b3e8a..6ff8e39 100644
--- a/13-loops/exercises/06-infinite-kill/solution/main.go
+++ b/13-loops/exercises/06-infinite-kill/solution/main.go
@@ -28,6 +28,6 @@ func main() {
 			c = "-"
 		}
 		fmt.Printf("\r%s Please Wait. Processing....", c)
-		time.Sleep(time.Millisecond * 150)
+		time.Sleep(time.Millisecond * 250)
 	}
 }
diff --git a/13-loops/exercises/08-lucky-number-exercises/02-random-messages/main.go b/13-loops/exercises/08-lucky-number-exercises/02-random-messages/main.go
index c888e48..206bfbf 100644
--- a/13-loops/exercises/08-lucky-number-exercises/02-random-messages/main.go
+++ b/13-loops/exercises/08-lucky-number-exercises/02-random-messages/main.go
@@ -18,14 +18,14 @@ package main
 //  3. I would use a short switch.
 //
 // EXAMPLES
-//  Player wins: then randomly printone of these:
+//  The Player wins: then randomly print one of these:
 //
 //  go run main.go 5
 //    YOU WON
 //  go run main.go 5
 //    YOU'RE AWESOME
 //
-//  Player loses: then randomly printone of these:
+//  The Player loses: then randomly print one of these:
 //
 //  go run main.go 5
 //    LOSER!