some exercises added to day_6

06_Day_Map_List_Keys/05_map_list_keys.md

@@ -258,6 +258,12 @@ ReactDOM.render(<App />, rootElement)
 
 # Exercises
 
-coming soon ...
+1. In the following design, evens are green, odds are yellow and prime numbers are red.
+
+![Number Generator](../images/day_6_number_generater_exercise.png)
+
+1. Create the following hexadecimal colors
+
+![Number Generator](../images/day_6_hexadecimal_colors_exercise.png)
 
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