diff --git a/README.md b/README.md
index 1fc6248..311ee1e 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,6 @@
 53 - 2 = 51
 62 * 61 = 3782
 77 * 45 = 3465
-91 - 52 = 39
 27 * 69 = 1863
 74 / 2 = 37
 23 * 72 = 1656