diff --git a/src/training_day.clj b/src/training_day.clj
index f5ac2e69..a74a6a40 100644
--- a/src/training_day.clj
+++ b/src/training_day.clj
@@ -1,11 +1,11 @@
 (ns training-day)
 
-(def answer ":(")
+(def answer 42)
 
 (def hai "O HAI!")
 
 (defn square [x]
-  ":(")
+  (* x x))
 
 (defn average [a b]
-  ":(")
+  (/ (+ a b) 2))