solve error

search.ipynb

@@ -1270,7 +1270,7 @@
     "              | 5 | 0 | 6 |                       | 3 | 4 | 5 |\n",
     "              | 8 | 3 | 1 |                       | 6 | 7 | 8 |\n",
     "              \n",
-    "We have a total of 9 blank tiles giving us a total of 9! initial configuration but not all of these are solvable, the solvability of a configuration can be checked by calculating the Inversion Permutation. If the total Inversion Permutation is even then the initial configuration is solvable else not.\n",
+    "We have a total of 9 blank tiles giving us a total of 9! initial configuration but not all of these are solvable, the solvability of a configuration can be checked by calculating the Inversion Permutation. If the total Inversion Permutation is even then the initial configuration is solvable else the initial configuration is not solvable which means that only 9!/2 initial states lead to a solution.\n",
     "\n",
     "#### Heuristics :-\n",
     "\n",