diff --git a/education/software development/ECE1400/Chapter 17 Exercises.md b/education/software development/ECE1400/Chapter 17 Exercises.md
index 78dd595..4d0498c 100644
--- a/education/software development/ECE1400/Chapter 17 Exercises.md	
+++ b/education/software development/ECE1400/Chapter 17 Exercises.md	
@@ -26,6 +26,16 @@ struct {
 > Which of the following statements are legal?
 
 (a) `p->b = ' ';`
-(b) `p->e[3] = 10;`
-(c) `(*p).d.a = '*';`
-(d) `p->d->c = 20;`
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+(b) `p->e[3] = 10;` - **Legal**
+(c) `(*p).d.a = '*';` - **Legal**
+(d) `p->d->c = 20;`
+
+---
+
+> **7.** The following loop is supposed to delete all nodes from a linked list and release the memory that they occupy. Unfortunately, the loop is incorrect. Explain what's wrong with it and show how to fix the bug.
+```c
+for (p = first; p != NULL; p = p->next)
+	free(p);
+```
+
+The above loop won't function because it deallocates an entry, resulting
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