diff --git a/Sprint-3/2-practice-tdd/count.test.js b/Sprint-3/2-practice-tdd/count.test.js
index 179ea0ddf..8bf8f7d66 100644
--- a/Sprint-3/2-practice-tdd/count.test.js
+++ b/Sprint-3/2-practice-tdd/count.test.js
@@ -17,7 +17,7 @@ test("should count multiple occurrences of a character", () => {
   expect(count).toEqual(5);
 });
 
-// Scenario: No Occurrences
+// Scenario: No Occurrences.
 // Given the input string `str`,
 // And a character `char` that does not exist within `str`.
 // When the function is called with these inputs,
diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.js b/Sprint-3/2-practice-tdd/get-ordinal-number.js
index f95d71db1..7f655e042 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.js
@@ -1,5 +1,16 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const lastTwoDigits = num % 100;
+  const lastDigit = num % 10;
+
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 13) {
+    return `${num}th`;
+  }
+
+  if (lastDigit === 1) return `${num}st`;
+  if (lastDigit === 2) return `${num}nd`;
+  if (lastDigit === 3) return `${num}rd`;
+
+  return `${num}th`;
 }
 
 module.exports = getOrdinalNumber;
diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
index adfa58560..05d7c0ef4 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
@@ -10,7 +10,7 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // into meaningful categories. Then, select representative samples from each category to test.
 // This approach improves coverage and makes our tests easier to maintain.
 
-// Case 1: Numbers ending with 1 (but not 11)
+// Case 1: Numbers ending with 1 (but not 11).
 // When the number ends with 1, except those ending with 11,
 // Then the function should return a string by appending "st" to the number.
 test("should append 'st' for numbers ending with 1, except those ending with 11", () => {
diff --git a/Sprint-3/2-practice-tdd/repeat-str.test.js b/Sprint-3/2-practice-tdd/repeat-str.test.js
index a3fc1196c..5956ed93b 100644
--- a/Sprint-3/2-practice-tdd/repeat-str.test.js
+++ b/Sprint-3/2-practice-tdd/repeat-str.test.js
@@ -1,4 +1,4 @@
-// Implement a function repeatStr
+// Implement a function repeatStr.
 const repeatStr = require("./repeat-str");
 // Given a target string `str` and a positive integer `count`,
 // When the repeatStr function is called with these inputs,
diff --git a/package.json b/package.json
index 0657e22dd..6c91c8de4 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "keywords": [],
   "author": "Code Your Future",
   "license": "ISC",
-  "dependencies": {
-    "jest": "^29.7.0"
+  "devDependencies": {
+    "jest": "^30.3.0"
   }
-}
\ No newline at end of file
+}