Update README.md to reflect the new excercise

Author: razorblade23

exercises/foundations/03_math_and_comparisons/README.md

@@ -1,15 +1,51 @@
-# Exercise 03 - Math and Comparisons
+# Exercise 03 - Math, String Operations, and Comparisons
 
 ## Description
-Following lesson two on math and comparisons, we will cover essential math skills, some basic string manipulation and comparisons in these tests as well.
+In this exercise, you will build basic RPG combat mechanics to practice working with numbers, string manipulation, and comparison operators.
 
-Your tasks are described in code comments, but here it is again. **DO NOT** change set values, but replace `None` with how your code should behave.
+## Tasks
 
-### Run the tests
-To run the tests, run the following command in the directory root (`python-excercises`):
-```bash
-python check.py 03
-```
+### Task 1: Character Setup
+Define the following variables with their exact values:
+* `player_class` — string set to `"Wizard"`
+* `player_attack` — integer set to `35`
+* `player_defense` — integer set to `13`
+* `enemy_attack` — integer set to `28`
+* `enemy_defense` — integer set to `16`
+
+> **Next step:** Run pytest. If `test_task_1` passes, open your test file and remove the `@pytest.mark.skip` decorator above `test_task_2`.
+
+### Task 2: Calculate Power Ratings
+* Define `player_attack_power` by multiplying `player_attack` by `player_defense`.
+* Define `enemy_attack_power` by multiplying `enemy_attack` by `enemy_defense`.
+
+> **Next step:** Run pytest. If `test_task_2` passes, open your test file and remove the `@pytest.mark.skip` decorator above `test_task_3`.
+
+### Task 3: Resolve Damage
+* Define `damage_dealt` by subtracting `enemy_attack_power` from `player_attack_power`.
+
+> **Next step:** Run pytest. If `test_task_3` passes, open your test file and remove the `@pytest.mark.skip` decorator above `test_task_4`.
+
+### Task 4: Output the Combat Log
+* Define a variable named `combat_log` using an **f-string**.
+* The string must format `player_class` in **ALL CAPS** and insert `damage_dealt`:
+  `"WIZARD has suffered 7 damage."`
+
+> **Next step:** Run pytest. If `test_task_4` passes, open your test file and remove the `@pytest.mark.skip` decorator above `test_task_5`.
+
+### Task 5: Battle Comparisons
+* Define a boolean `is_player_stronger` that checks if `player_attack_power` is greater than `enemy_attack_power`.
+* Define a boolean `is_balanced` that checks if `player_defense` is equal to `enemy_defense`.
+
+> **Next step:** Run pytest. If `test_task_5` passes, open your test file and remove the `@pytest.mark.skip` decorator above `test_task_6`.
+
+### Task 6: Class Code Extraction
+* Define a variable `class_initial` that extracts the **first letter** of `player_class`.
+* Define a variable `class_code` that extracts the **first 3 letters** of `player_class` in lowercase (e.g., `"wiz"`).
+
+> **Next step:** Run pytest. If `test_task_6` passes, congratulation, you have successfully passed this exercise.
+
+---
 
 ## Notes
-Learn about math, string operations and comparisons in [TPL lesson](https://thepythonledger.github.io/Docusaurus-engine/lessons/python-foundations/math-strops-and-comparisons).
+Review the concepts covered in this exercise in [The Python Ledger lesson](https://thepythonledger.github.io/Docusaurus-engine/lessons/python-foundations/math-strops-and-comparisons).