diff --git a/arrays.js b/arrays.js
index 37faed2..0ff82ce 100644
--- a/arrays.js
+++ b/arrays.js
@@ -16,6 +16,13 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
+const inventory =["milk", "apple","chocolate","bread","eggs"]
+ 
+ inventory:push("orange","bananas");
+
+ inventory:finish();
+
+   console.log("Updated inventory",inventory)
 
 
 
@@ -39,7 +46,17 @@ Output: "Ali is present."
 */
 
 // ✍️ Write your function here ✍️
+  const students = ["ahmed","ayaan","nimco","hassan"];
+    function isPresent(name){
+      if(students.includes(name)){
+        return `${name} is present`;
+      }else{
+        return `${name} is absent`;
 
+      }
+    }
+      console.log(students("nimco"));
+      console.log(student("ahmed"))
 
 
 
@@ -66,7 +83,41 @@ Output: Sorted leaderboard with updated scores
 */
 
 // ✍️ Write your functions here ✍️
-
+     
+      const topScorers = [
+        {name: "messi", score: 10},
+        {name:"Ronaldo", score: 8},
+        {name: "Naymer", score: 6},
+      ]
+
+        function updateScore(playerName, points) {
+    let found = false;
+
+     for (let i = 0; i < topScorers.length; i++) {
+        if (topScorers[i].name === playerName) {
+            topScorers[i].score += points;
+            found = true;
+            break;
+        }
+    }
+       if (!found) {
+        topScorers.push({ name: playerName, score: points });
+    }
+ }
+  function printLeaderboard(){
+    topScorers.sort(function(a,b){
+      return b.score - a.score;
+    });
+  }
+
+  for (let i = 0; i < topScorers.length; i++){
+    console.log(topScorers[i].name + ":" + topScorers[i].score);
+  }
+
+   updateScore("Messi", 10)
+   printLeaderboard();
+
+   
 
 
 
diff --git a/callbacks.js b/callbacks.js
index 3fadb3f..c347ced 100644
--- a/callbacks.js
+++ b/callbacks.js
@@ -19,6 +19,14 @@ Expected Output:
 // ✍️ Solve it here ✍️
 
 
+   function showWelcome(name) {
+    console.log("Welcome, " + name + "!");
+  }
+   function sendMessage(userName, callbackFn) {
+    callbackFn(userName);
+}
+   sendMessage("Ahmed", showWelcome);
+
 
 
 /*
@@ -47,6 +55,23 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+ 
+ function readTemperature(value) {
+    if (value > 30) {
+        console.log(value + "°C is Hot.");
+    } else if (value >= 15 && value <= 30) {
+        console.log(value + "°C is Warm.");
+    } else {
+        console.log(value + "°C is Cold.");
+    }
+}
+ function checkTemperature(temp, callbackFn) {
+    callbackFn(temp);
+}
+
+ checkTemperature(35, readTemperature); 
+ checkTemperature(22, readTemperature); 
+ checkTemperature(10, readTemperature); 
 
 
 
@@ -73,3 +98,16 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
+  function checkUserAnswer(userAnswer, rightAnswer) {
+    if (userAnswer === rightAnswer) {
+        console.log("Correct!");
+    } else {
+        console.log("Incorrect. The correct answer is " + rightAnswer + ".");
+    }
+}
+
+  function checkUserAnswer(){
+    let userInput = prompt(question);
+    callbackFn(userInput, correctAnswer);
+  }
+
diff --git a/index.html b/index.html
index 1104b64..d181b9d 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="js/arrays.js"></script>
+        <script src="js/callbacks.js"></script>
+        <script src="js/objects.js"></script>
     </body>
 </html>
\ No newline at end of file
diff --git a/objects.js b/objects.js
index e2426e9..93fa7be 100644
--- a/objects.js
+++ b/objects.js
@@ -29,7 +29,22 @@ Expected Output:
 */
 
 // ✍️ Solve it here ✍️
-
+  
+ const gamerProfile = {
+    username: "nightHunter",
+    level: 12,
+    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.");
+    }
+}
+ updateonlineStatus(gamerProfile,true);
 
 
 /*
@@ -64,7 +79,20 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
+const dress = {
+    name: "Summer Dress",
+    size: "L",
+    inStock: false
+};
 
+function checkAvailability(dressItem) {
+    if (dressItem.inStock === true) {
+        console.log(dressItem.name + " is available in size " + dressItem.size + ".");
+    } else {
+        console.log(dressItem.name + " is out of stock.");
+    }
+}
+ checkAvailability(dress);
 
 /*
 Task 3: Supercar Feature Adder 🚗 🚗 🚗 🚗
@@ -104,3 +132,20 @@ Features:
 */
 
 // ✍️ Solve it here ✍️
+
+ const supercar = {
+    model: "Lambo V12",
+    price: 450000,
+    features: {
+        color: "Black"
+    }
+};
+ function addFeature(car, featureName) {
+    car.features[featureName] = true;
+    console.log(featureName + " has been added to " + car.model + ".");
+}
+addFeature(supercar, "spoiler");
+console.log("Features:");
+for (let item in supercar.features) {
+    console.log("- " + item + ": " + supercar.features[item]);
+}