diff --git a/arrays.js b/arrays.js
index 37faed2..075dba4 100644
--- a/arrays.js
+++ b/arrays.js
@@ -15,6 +15,9 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+inventory.push("Oranges", "Bananas");
+inventory.shift();
+console.log(inventory);
 
 
 
@@ -39,6 +42,14 @@ Output: "Ali is present."
 */
 
 // ✍️ Write your function here ✍️
+function isPresent(name) {
+  if (students.includes(name)) {
+    return `${name} is present.`;
+  } else {
+    return `${name} is absent.`;
+  }
+}
+
 
 
 
@@ -66,6 +77,28 @@ Output: Sorted leaderboard with updated scores
 */
 
 // ✍️ Write your functions here ✍️
+function updateScore(playerName, scoreToAdd) {
+ 
+  const player = topScorers.find(p => p.name === playerName);
+
+  if (player) {
+   
+    player.score += scoreToAdd;
+  } else {
+   
+    topScorers.push({ name: playerName, score: scoreToAdd });
+  }
+}
+
+function printLeaderboard() {
+  
+  const sorte = topScorers.sort((b, t) => b.score - t.score);
+
+  console.log("Top Scorers Leaderboard:");
+  sorte.forEach((player, index) => {
+    console.log(`${index + 1}. ${player.name} - ${player.score}`);
+  });
+}
 
 
 
diff --git a/callbacks.js b/callbacks.js
index 3fadb3f..f8e5cb0 100644
--- a/callbacks.js
+++ b/callbacks.js
@@ -17,6 +17,15 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+function theCallBackFunction(name) {
+  console.log(`Welcome, ${name}!`);
+}
+
+
+function sendMessage(userName, callback) {
+  
+  callback(userName);
+}
 
 
 
@@ -47,6 +56,21 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+function evaluateTemperature(temp) {
+  if (temp > 30) {
+    console.log(`${temp}°C is Hot.`);
+  } else if (temp >= 15 && temp <= 30) {
+    console.log(`${temp}°C is Warm.`);
+  } else {
+    console.log(`${temp}°C is Cold.`);
+  }
+}
+
+
+function checkTemperature(temperature, callback) {
+  
+  callback(temperature);
+}
 
 
 
@@ -73,3 +97,18 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+function theCallBackFunction(userAnswer, correctAnswer) {
+  if (userAnswer === correctAnswer) {
+    console.log("Correct!");
+  } else {
+    console.log(`Incorrect. The correct answer is ${correctAnswer}.`);
+  }
+}
+
+
+function evaluateAnswer(question, correctAnswer, callback) {
+  
+  const userAnswer = prompt(question); 
+  callback(userAnswer, correctAnswer);
+}
+
diff --git a/index.html b/index.html
index 1104b64..5b38cf4 100644
--- a/index.html
+++ b/index.html
@@ -5,5 +5,9 @@
         <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="callbacks.js"></script>
+            <script src="objects.js"></script>
+         
     </body>
 </html>
\ No newline at end of file
diff --git a/objects.js b/objects.js
index e2426e9..ec4b8eb 100644
--- a/objects.js
+++ b/objects.js
@@ -29,6 +29,22 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+var gamerProfile = {
+  username: "ShadowSlayer",
+  level: 5,
+  isOnline: false
+};
+
+
+function updateOnlineStatus(profile, status) {
+  profile.isOnline = status;
+
+  if (status == true) {
+    console.log(profile.username + " is now online.");
+  } else {
+    console.log(profile.username + " is now offline.");
+  }
+}
 
 
 
@@ -63,6 +79,20 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+var dress = {
+  name: "Evening Gown",
+  size: "M",
+  inStock: true
+};
+
+
+function checkAvailability() {
+  if (dress.inStock == true) {
+    console.log(dress.name + " is available in size " + dress.size + ".");
+  } else {
+    console.log(dress.name + " is out of stock.");
+  }
+}
 
 
 
@@ -104,3 +134,25 @@ Features:
 */
 
 // ✍️ Solve it here ✍️
+var supercar = {
+  model: "Ferrari SF90",
+  price: 500000,
+  features: {
+    color: "Red"
+  }
+};
+
+
+function addFeature(car, featureName) {
+  car.features[featureName] = true;
+  console.log(featureName + " has been added to " + car.model + ".");
+}
+
+
+addFeature(supercar, "turbo");
+
+
+console.log("Features:");
+for (var feature in supercar.features) {
+  console.log("- " + feature + ": " + supercar.features[feature]);
+}