fix: precedence and assignment operator questions

08-numbers-and-strings/01-numbers/exercises/03-precedence/main.go

@@ -36,4 +36,7 @@ func main() {
 
 	// This expression should print 15
 	fmt.Println(10 / 2 * 10 % 7)
+
+	// This expression should print 40
+	fmt.Println(100 / 5 / 2)
 }

08-numbers-and-strings/01-numbers/exercises/03-precedence/solution/main.go

@@ -27,4 +27,7 @@ func main() {
 
 	// 10 / 2 * 10 % 7
 	fmt.Println(10 / 2 * (10 % 7))
+
+	// 100 / 5 / 2
+	fmt.Println(100 / (5 / 2))
 }

08-numbers-and-strings/01-numbers/questions/02-precedence.md

@@ -13,12 +13,13 @@
 ```go
 5 - (2 * 5) + 7
 ```
-1. 2
+1. 2 *CORRECT*
-2. 22 *CORRECT*
+2. 22
 3. -19
 4. 36
 5. -12
 
+> **1:** The expression can also be: 5 + (2 * 5) + 7
 
 ## What's the result of the expression?
 ```go

08-numbers-and-strings/01-numbers/questions/03-assignment-operations.md

@@ -89,8 +89,8 @@ var n int
 
 ## Which code below equals to `x = x % 2`?
 1. `x = x / 2`
-2. `x =% x`
+2. `x =% 2`
-3. `x %= x` *CORRECT*
+3. `x %= 2` *CORRECT*
 
 > **1:** This is a division. You need to use the remainder operator.
 >