Fix typo and add a MIT license

2016-07-15 17:09:47 -05:00
parent 28c5670563
commit c6d6b9954c
3 changed files with 11 additions and 5 deletions
--- a/exercises.md
+++ b/exercises.md
@@ -593,7 +593,7 @@ print(Z)
 print(Z[Z[:,1].argsort()])
 ```

-### 60. How to tell if a given 2D array has null columns? (★★☆)
+#### 60. How to tell if a given 2D array has null columns? (★★☆)


 ```python