diff --git a/src/students.ts b/src/students.ts
index ac9d6c0..652866d 100644
--- a/src/students.ts
+++ b/src/students.ts
@@ -72,7 +72,7 @@ const students: Student[] = [
 function getStudentName(student: Student): string {
   // write your code here...
 
-  return ""; // replace empty string with what you see is fit
+  return student.name; // replace empty string with what you see is fit
 }
 
 /**
@@ -87,9 +87,12 @@ function getStudentName(student: Student): string {
 function getCourse(student: Student, courseIndex: number): string {
   // write your code here...
 
-  return ""; // replace empty string with what you see is fit
+  return student.courses[courseIndex]; // replace empty string with what you see is fit
 }
 
+console.log(getStudentName(students[0]));
+console.log(getCourse(students[4], 2));
+
 /**
  * `addCourseToStudent` function:
  * - Accepts:
@@ -104,9 +107,13 @@ function getCourse(student: Student, courseIndex: number): string {
 function addCourseToStudent(student: Student, course: string): Student {
   // write your code here...
 
+  student.courses.push(course);
   return student;
 }
 
+const updatedStudent = addCourseToStudent(students[7], "Physics");
+console.log(updatedStudent);
+
 /**
  * `countCourses` function:
  * - Accepts a `student` parameter of type `Student`.
@@ -117,9 +124,11 @@ function addCourseToStudent(student: Student, course: string): Student {
 function countCourses(student: Student): number {
   // write your code here...
 
-  return -1; // replace -1 with what you see is fit
+  return student.courses.length;
 }
 
+console.log(countCourses(students[1]));
+
 /**
  * `removeCourseFromStudent` function:
  * - Accepts:
@@ -133,7 +142,11 @@ function countCourses(student: Student): number {
  */
 function removeCourseFromStudent(student: Student, course: string): Student {
   // write your code here...
+  const courseIndex = student.courses.indexOf(course);
 
+  if (courseIndex !== -1) {
+    student.courses.splice(courseIndex, 1);
+  }
   return student;
 }
 
@@ -156,7 +169,7 @@ function findStudentById(
 ): Student | undefined {
   // write your code here...
 
-  return undefined; // replace undefined with what you see is fit
+  return students.find((student) => student.id === studentId); // replace undefined with what you see is fit
 }
 
 export {