diff --git a/src/students.ts b/src/students.ts
index ac9d6c0..0faa2cf 100644
--- a/src/students.ts
+++ b/src/students.ts
@@ -70,11 +70,9 @@ const students: Student[] = [
  *  getStudentName(students[0]); // => "Alice"
  */
 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
 }
-
+console.log(getStudentName(students[0]));
 /**
  * `getCourse` function:
  * - Accepts:
@@ -85,11 +83,9 @@ function getStudentName(student: Student): string {
  *  getCourse(students[4], 2); // => "Music"
  */
 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(getCourse(students[4], 2));
 /**
  * `addCourseToStudent` function:
  * - Accepts:
@@ -102,10 +98,11 @@ function getCourse(student: Student, courseIndex: number): string {
  *    // => { id: 8, name: "Helen", courses: ["History", "Art", "PE", "Physics"] }
  */
 function addCourseToStudent(student: Student, course: string): Student {
-  // write your code here...
+  student.courses.push(course);
 
   return student;
 }
+console.log(addCourseToStudent(students[7], "phy"));
 
 /**
  * `countCourses` function:
@@ -115,9 +112,7 @@ function addCourseToStudent(student: Student, course: string): Student {
  *  countCourses(students[1]); // => 4
  */
 function countCourses(student: Student): number {
-  // write your code here...
-
-  return -1; // replace -1 with what you see is fit
+  return student.courses.length; // replace -1 with what you see is fit
 }
 
 /**
@@ -132,7 +127,10 @@ function countCourses(student: Student): number {
  *    // => { id: 7, name: "Grace", courses: ["Math", "English", "Music"] }
  */
 function removeCourseFromStudent(student: Student, course: string): Student {
-  // write your code here...
+  const rArry = student.courses.indexOf(course);
+  if (rArry !== -1) {
+    student.courses.splice(rArry, 1);
+  }
 
   return student;
 }
@@ -154,11 +152,11 @@ function findStudentById(
   students: Student[],
   studentId: number
 ): Student | undefined {
-  // write your code here...
-
-  return undefined; // replace undefined with what you see is fit
+  return students.find((sf) => sf.id === studentId); // replace undefined with what you see is fit
 }
 
+console.log(findStudentById(students, 10));
+
 export {
   Student,
   getStudentName,