diff --git a/Sprint-3/2-practice-tdd/count.js b/Sprint-3/2-practice-tdd/count.js
index 95b6ebb7d..3fc706aa8 100644
--- a/Sprint-3/2-practice-tdd/count.js
+++ b/Sprint-3/2-practice-tdd/count.js
@@ -1,5 +1,14 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
-}
+  if (typeof stringOfCharacters !== "string") return 0;
+
+  let count = 0;
 
+  for (let char of stringOfCharacters) {
+    if (char === findCharacter) {
+      count++;
+    }
+  }
+
+  return count;
+}
 module.exports = countChar;
diff --git a/Sprint-3/2-practice-tdd/count.test.js b/Sprint-3/2-practice-tdd/count.test.js
index 179ea0ddf..e4beda50f 100644
--- a/Sprint-3/2-practice-tdd/count.test.js
+++ b/Sprint-3/2-practice-tdd/count.test.js
@@ -22,3 +22,39 @@ test("should count multiple occurrences of a character", () => {
 // And a character `char` that does not exist within `str`.
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of `char` were found.
+test("should return 0 when character does not exist in string", () => {
+  const str = "hello";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+// Scenario: Case Sensitivity
+test("should be case sensitive", () => {
+  expect(countChar("AaAa", "a")).toBe(2);
+});
+
+// Scenario: Empty String
+test("should return 0 for an empty string", () => {
+  expect(countChar("", "a")).toBe(0);
+});
+
+// Scenario: Special Characters
+test("should count special characters", () => {
+  expect(countChar("!@#$%^&*()!", "!")).toBe(2);
+});
+
+// Scenario: Non-String Inputs
+test("should handle non-string inputs gracefully", () => {
+  expect(countChar(12345, "1")).toBe(0);
+  expect(countChar(null, "a")).toBe(0);
+  expect(countChar(undefined, "a")).toBe(0);
+});
+test ("should count numeric characters in a string", () => {
+
+  expect(countChar("12345", "1")).toBe(1);
+});
+// Scenario: Space Character
+test("should count spaces correctly", () => {
+  expect(countChar("a a a", " ")).toBe(2);
+});
\ No newline at end of file
diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.js b/Sprint-3/2-practice-tdd/get-ordinal-number.js
index f95d71db1..8613add93 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.js
@@ -1,5 +1,11 @@
-function getOrdinalNumber(num) {
-  return "1st";
+function getOrdinalNumber(n) {
+  if (n % 100 >= 11 && n % 100 <= 13) return n + "th";
+
+  if (n % 10 === 1) return n + "st";
+  if (n % 10 === 2) return n + "nd";
+  if (n % 10 === 3) return n + "rd";
+
+  return n + "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..c6924c443 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
@@ -18,3 +18,27 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+// Case 2: numbers ending with 2 (except 12)
+test("should append 'nd' for numbers ending with 2, except those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(142)).toEqual("142nd");
+});
+
+// Case 3: numbers ending with 3 (except 13)
+test("should append 'rd' for numbers ending with 3, except those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(143)).toEqual("143rd");
+});
+
+// Case 4: numbers ending with 0, 4-9 (except 10-19)
+test("should append 'th' for numbers ending with 0, 4-9, except those ending with 10-19", () => {
+  expect(getOrdinalNumber(0)).toEqual("0th");
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});
diff --git a/Sprint-3/2-practice-tdd/repeat-str.js b/Sprint-3/2-practice-tdd/repeat-str.js
index 3838c7b00..96bda5eb4 100644
--- a/Sprint-3/2-practice-tdd/repeat-str.js
+++ b/Sprint-3/2-practice-tdd/repeat-str.js
@@ -1,5 +1,7 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if( count >= 0 )
+  {return str.repeat (count)};
+else { return 'invalid count'};
 }
 
 module.exports = repeatStr;
diff --git a/Sprint-3/2-practice-tdd/repeat-str.test.js b/Sprint-3/2-practice-tdd/repeat-str.test.js
index a3fc1196c..16e274a4b 100644
--- a/Sprint-3/2-practice-tdd/repeat-str.test.js
+++ b/Sprint-3/2-practice-tdd/repeat-str.test.js
@@ -20,13 +20,29 @@ test("should repeat the string count times", () => {
 // Given a target string `str` and a `count` equal to 1,
 // When the repeatStr function is called with these inputs,
 // Then it should return the original `str` without repetition.
-
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
 // Case: Handle count of 0:
 // Given a target string `str` and a `count` equal to 0,
 // When the repeatStr function is called with these inputs,
 // Then it should return an empty string.
-
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual(" ");
+});
 // Case: Handle negative count:
 // Given a target string `str` and a negative integer `count`,
 // When the repeatStr function is called with these inputs,
 // Then it should throw an error, as negative counts are not valid.
+test("should repeat the string count times", () => {
+  const str = "hello";
+  const count = -1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("invalid count");
+});