diff --git a/arrays.js b/arrays.js
index 37faed2..c4dae34 100644
--- a/arrays.js
+++ b/arrays.js
@@ -15,9 +15,10 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
-
-
-
+const inventory = ["Apple", "Bread", "Milk", "Eggs"];
+inventory.push("Oranges","Bananas");
+inventory.shift();
+console.log(inventory);
 
 
 /*
@@ -39,9 +40,16 @@ Output: "Ali is present."
 */
 
 // ✍️ Write your function here ✍️
-
-
-
+ const students = ["Ali", "Fatima", "Hassan", "Layla"];
+function isPresent(name){
+  if(name==students.at()){
+     return `${[name]} is present`;
+  }
+  else{
+    return `${[name]} is not present`;
+      }
+}
+console.log(isPresent("Ali"));
 
 
 
@@ -50,8 +58,10 @@ Task 3: Top Scorers Leaderboard 🏆⚽
 
 You are creating a leaderboard for a soccer game. The array `topScorers` contains the names of players and their scores.
 
-1. Write a function called `updateScore` that takes a player's name and a score to add. If the player exists in the leaderboard, add the score to their total. If not, add the player to the array with the given score.
-2. Write another function called `printLeaderboard` that sorts the leaderboard in descending order of scores and prints it.
+1. Write a function called `updateScore` that takes a player's name and a score to add. If the player exists in the 
+   leaderboard, add the score to their total. If not, add the player to the array with the given score.
+2. Write another function called `printLeaderboard` that sorts the leaderboard in descending order of scores and prints 
+it.
 
 Array:
 const topScorers = [
@@ -66,7 +76,23 @@ Output: Sorted leaderboard with updated scores
 */
 
 // ✍️ Write your functions here ✍️
-
+const topScorers = [
+  { name: "Messi", score: 5 },
+  { name: "Ronaldo", score: 3 },
+  { name: "Neymar", score: 4 }
+]
+let i;
+function updateScore(name, Score){
+    if(name==topScorers.at().name){
+       topScorers.at().score=topScorers.at().score+Score;
+     }  
+    else{
+    topScorers.push({name, Score});
+     }
+  
+}
+updateScore("Messi", 5);
+console.log(topScorers);
 
 
 
diff --git a/callbacks.js b/callbacks.js
index 3fadb3f..0443829 100644
--- a/callbacks.js
+++ b/callbacks.js
@@ -17,7 +17,13 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
-
+function sendMessage(name, callback){
+  callback(name);
+}
+function call(names){
+  console.log(`welcome, ${names}`);
+}
+sendMessage("Amina", call);
 
 
 
@@ -47,7 +53,21 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
-
+function checkTemperature(temp, Callback){
+  Callback(temp);
+}
+function checkTempcallback(temperature){
+  if(temperature>=30){
+    console.log(`${temperature}°C is hot`);
+  }
+  else if(temperature>=15 && temperature<30){
+   console.log(`${temperature}°C is warm`);
+  }
+  else{
+    console.log(`${temperature}°C is cold`);
+  }
+}
+checkTemperature(35, checkTempcallback);
 
 
 
diff --git a/index.html b/index.html
index 1104b64..ce27378 100644
--- a/index.html
+++ b/index.html
@@ -5,5 +5,8 @@
         <h1>Look at the console to see the results</h1>
 
         <!-- Before starting, add the javascript files in this html fie -->
+         <script src="arrays.js"></script>
+         <script src="objects.js"></script>
+         <script src="callbacks.js"></script>
     </body>
 </html>
\ No newline at end of file
diff --git a/objects.js b/objects.js
index e2426e9..0fb830b 100644
--- a/objects.js
+++ b/objects.js
@@ -29,7 +29,20 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
-
+const gamerProfile = {
+  username: "ShadowSlayer",
+  level: 5,
+  isOnline: false
+};
+function updateOnlineStatus(gamerProfile, status){
+   if(gamerProfile.isOnline==status){
+      console.log(`${gamerProfile.username} is now online`);
+   }
+   else{
+      console.log(`${gamerProfile.username} is now offline`)
+   }
+}
+updateOnlineStatus(gamerProfile, true);
 
 
 /*
@@ -63,8 +76,20 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
-
-
+const dress = {
+  name: "Evening Gown",
+  size: "M",
+  inStock: true
+};
+function checkAvailability(dress){
+   if(dress.inStock){
+      console.log(`${dress.name} is available in size ${dress.size}`);
+   }
+   else{
+      console.log(`${dress.name}  is out of stock`);
+   }
+}
+ checkAvailability(dress)
 
 /*
 Task 3: Supercar Feature Adder 🚗 🚗 🚗 🚗
@@ -86,14 +111,6 @@ Steps:
 
 Example:
 Input:
-const supercar = {
-  model: "Ferrari SF90",
-  price: 500000,
-  features: {
-    color: "Red"
-  }
-};
-
 addFeature(supercar, "turbo");
 
 Expected Output:
@@ -104,3 +121,18 @@ Features:
 */
 
 // ✍️ Solve it here ✍️
+const supercar = {
+  model: "Ferrari SF90",
+  price: 500000,
+  features: {
+    color: "Red"
+  }
+};
+function addFeature(supercar, feature){
+  supercar.features.feature=true;
+  console.log(`${feature} has been added`);
+}
+addFeature(supercar, "turbo");
+for(let key in supercar.features){
+   console.log(`${key}: ${supercar.features[key]}`);
+}
\ No newline at end of file