diff --git a/education/software development/ECE1400/Chapter 7 Exercises.md b/education/software development/ECE1400/Chapter 7 Exercises.md
index 5f2538d..065ba74 100644
--- a/education/software development/ECE1400/Chapter 7 Exercises.md	
+++ b/education/software development/ECE1400/Chapter 7 Exercises.md	
@@ -23,4 +23,13 @@ printf(c);
 ```
 
 Answer:
-D is incorrect because `printf` operates on strings.
\ No newline at end of file
+D is illegal because `printf` operates on strings, not `char`s.
+
+> 6. For each of the following items of data, specify which one of the types `char`, `short`, `int`, or `long`is the smallest one guaranteed to be large enough to store the item.
+
+Answer:
+A. Days in a month: `char`
+B. Days in a year: `short`
+C. Minutes in a day: `short`
+D. Seconds in a day: `long`
+