diff --git a/assignments/bmi_calculator/bmi_calculator.js b/assignments/bmi_calculator/bmi_calculator.js
index 0cdd351..ffeaa49 100644
--- a/assignments/bmi_calculator/bmi_calculator.js
+++ b/assignments/bmi_calculator/bmi_calculator.js
@@ -1,6 +1,13 @@
 // This function should return the BMI for a person 
 function BMICalculator(mass, height) {
     // Write your code here
+    if(mass>0 && height>0){
+        BMI = mass / (height * height)
+        return BMI
+    }
+    else{
+        return "INVALID INPUT";
+    }
 }
 
 module.exports = BMICalculator;
diff --git a/assignments/can_drive/can_drive.js b/assignments/can_drive/can_drive.js
index f2f1251..9d56844 100644
--- a/assignments/can_drive/can_drive.js
+++ b/assignments/can_drive/can_drive.js
@@ -1,5 +1,16 @@
 function CanDrive(hasDrivingLiscence, isTired, isSober) {
     // Write you code here
+    if(hasDrivingLiscence===false){
+        return "You cannot drive";
+    }
+    else if(hasDrivingLiscence===true  && (isTired===true || isSober===false)){
+        return "You shouldn't drive";
+    }
+    else if(hasDrivingLiscence===true  && (isTired===false || isSober===true)){
+        return "You can drive";
+    }
 }
 
 module.exports = CanDrive;
+
+
diff --git a/assignments/create_object/create_object.js b/assignments/create_object/create_object.js
index 775bc8c..09e0a33 100644
--- a/assignments/create_object/create_object.js
+++ b/assignments/create_object/create_object.js
@@ -1,5 +1,12 @@
 function CreateObject(arr) {
     // Write your code here
+    obj={};
+    arr.forEach((element,index,arr)=>{
+        if(index%2===0){
+            obj[element]=arr[index+1];
+        }
+    });
+    return obj;
 }
 
 module.exports = CreateObject;
diff --git a/assignments/favourite_movie/favourite_movie.js b/assignments/favourite_movie/favourite_movie.js
index a8148eb..cbc089f 100644
--- a/assignments/favourite_movie/favourite_movie.js
+++ b/assignments/favourite_movie/favourite_movie.js
@@ -2,6 +2,12 @@ const movies = [];
 
 function favouriteMovie(operation, movie) {
     // Write your code here
+    if(operation==="add"){
+        movies.push(movie);
+    }
+    else if(operation==="remove"){
+        movies.pop();
+    }
+    return movies;
 }
-
 module.exports = favouriteMovie;
diff --git a/assignments/play_with_array/play_with_array.js b/assignments/play_with_array/play_with_array.js
index 0601c6f..e30cbc2 100644
--- a/assignments/play_with_array/play_with_array.js
+++ b/assignments/play_with_array/play_with_array.js
@@ -7,7 +7,8 @@ function getEven(arr) {
 
         Write you code below
     */
-
+   var res=arr.filter(number=>number%2===0);
+   return res
 }
 
 function multiplyByN(arr, n) {
@@ -18,6 +19,8 @@ function multiplyByN(arr, n) {
             Output: [3,9,13,165]
         Write you code below
     */
+   var mul=arr.map(number=>number*n)
+   return mul
 }
 
 function removeNthElement(arr, n) {
@@ -28,6 +31,8 @@ function removeNthElement(arr, n) {
             Output: [1,3,4,7]
         Write you code below
     */
+   arr.splice(n,1);
+   return arr
 }
 
 module.exports = {
diff --git a/assignments/run_callback/run_callback.js b/assignments/run_callback/run_callback.js
index 04bf43e..6f866b4 100644
--- a/assignments/run_callback/run_callback.js
+++ b/assignments/run_callback/run_callback.js
@@ -1,5 +1,7 @@
 function RunCallback(a, b, cb) {
     // Write you code here, you need to add a and b, pass the result into callback function cb as argument return the result
+    var sum=a+b;
+    return cb(sum);
 }
 
 module.exports = RunCallback;
diff --git a/assignments/todo_list/script.js b/assignments/todo_list/script.js
index e69de29..a253b43 100644
--- a/assignments/todo_list/script.js
+++ b/assignments/todo_list/script.js
@@ -0,0 +1,17 @@
+var todoButton = document.querySelector('button');
+var userInput= document.querySelector('input');
+var todoList = document.querySelector('.todos')
+var count = 0;
+todoButton.addEventListener("click", AddTodo)
+function AddTodo(){
+    var  todo=document.createElement('p');
+    todo.setAttribute('key',count);
+    count=count+1;
+    todo.innerHTML=userInput.value;
+    todoList.appendChild(todo);
+    userInput.value='';
+    todo.addEventListener('click',function(e){
+        todoList.removeChild(todo);
+    })
+}
+
diff --git a/assignments/todo_list/script1.js b/assignments/todo_list/script1.js
new file mode 100644
index 0000000..31b6dfd
--- /dev/null
+++ b/assignments/todo_list/script1.js
@@ -0,0 +1,37 @@
+var todoButton = document.querySelector('button');
+var inputfield = document.querySelector('input');
+var todoList= document.querySelector('div.todos')
+var todos=[]
+
+async function callAPI(){
+    try{
+        const response=await fetch('https://jsonplaceholder.typicode.com/todos') 
+        .then(response=>response.json())
+        .then(json=>{
+            // const json=response.json()
+            todos=json.slice(0,10)
+            console.log(todos)
+            todos.forEach((todo,index)=>{
+                const newTodo =document.createElement('p')
+                newTodo.setAttribute('key',index)
+                newTodo.innerHTML=todo.title
+                todoList.appendChild(newTodo)
+                })
+            })
+        .catch((e)=>console.log(e))
+        }
+        catch(e){
+            console.log(e);
+        }
+}
+callAPI()
+
+todoButton.addEventListener('click',function(){
+    todoList.innerHTML='' 
+    todos.filter(todo => todo.completed).forEach((todo,index)=>{
+        const newTodo=document.createElement('p')
+        newTodo.setAttribute('key',index)
+        newTodo.innerHTML=todo.title 
+        todoList.appendChild(newTodo) ; 
+    })
+})
\ No newline at end of file
diff --git a/assignments/todo_list/todo.html b/assignments/todo_list/todo.html
index 8f6fac5..12fcf38 100644
--- a/assignments/todo_list/todo.html
+++ b/assignments/todo_list/todo.html
@@ -1,13 +1,25 @@
 <html>
     <head>
         <title>Todo List</title>
+        <style>
+            *{
+                margin:0;
+                padding:0;
+            }
+            body{
+                display:flex;
+                justify-content:center;
+                margin:200px auto; 
+            }
+        </style>
     </head>
     <body>
         <div>
             <input type='text' name='todo_input'>
             <button type='submit'>Add Todo</button>
-            <div class='todos'></div>
+            <div class='todos'>
+            </div>
         </div>
     </body>
-    <script src='./script.js'></script>
+    <script src='./script1.js'></script>
 </html>
\ No newline at end of file