diff --git a/arrays.js b/arrays.js
index 37faed2..4877a43 100644
--- a/arrays.js
+++ b/arrays.js
@@ -16,6 +16,14 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
+const inventory = ["Apples", "Bread", "Milk", "Eggs"];
+
+inventory.push("Oranges","Bananas");
+console.log(inventory.shift())
+
+
+console.log(inventory)
+
 
 
 
@@ -40,7 +48,17 @@ Output: "Ali is present."
 
 // ✍️ Write your function here ✍️
 
+const students = ["Ali", "Fatima", "Hassan", "Layla"];
+
+function isPresent(name) {
+  if (students.includes(name)) {
+    return `${name} is present.`
+  } else {
+    return `${name} is absent.`;
+  }
+}
 
+console.log(isPresent("Ali"))
 
 
 
@@ -68,11 +86,6 @@ Output: Sorted leaderboard with updated scores
 // ✍️ Write your functions here ✍️
 
 
-
-
-
-
-
 /*
 STRETCH TASK: **The Ultimate Treasure Hunt** 🗺️💎🏴‍☠️
 
diff --git a/callbacks.js b/callbacks.js
index 3fadb3f..3c2cf00 100644
--- a/callbacks.js
+++ b/callbacks.js
@@ -18,7 +18,12 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
-
+function sendMessage(username,cb) {
+          return cb(`Welcome, ${username}`)
+         }
+sendMessage("Amina", theCallBackFunction)
+function theCallBackFunction(welcome){
+console.log(welcome)}
 
 
 /*
@@ -48,7 +53,20 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
-
+function checkTemperature(tempv,cb){
+  
+return cb(tempv)}
+function theCallbackFunction(tempv){
+  if (tempv >30){
+    console.log("hot")
+  }
+  else if (tempv >= 15 && tempv <= 30){
+    console.log("warm")}
+  else {
+   console.log("cold") 
+  }
+}
+checkTemperature(35,theCallbackFunction)
 
 
 /*
diff --git a/index.html b/index.html
index 1104b64..b3efd6a 100644
--- a/index.html
+++ b/index.html
@@ -4,6 +4,10 @@
     <body>
         <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..41eec47 100644
--- a/objects.js
+++ b/objects.js
@@ -30,8 +30,22 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
+const gamerProfile = {
+  username: "ShadowSlayer",
+  level: 5,
+  isOnline: false
+};
 
+function updateOnlineStatus(gamerProfile, status) {
+  gamerProfile.isOnline = status;
 
+  if (status) {
+    console.log(`${gamerProfile.username} is now online.`);
+  } else {
+    console.log(`${gamerProfile.username} is now offline.`);
+  }
+}
+updateOnlineStatus(gamerProfile, true)
 /*
 Task 2: Dress Inventory Checker 👗 👗 👗 👗 👗
 
@@ -64,6 +78,21 @@ Expected Output:
 
 // ✍️ Solve it here ✍️
 
+const dress= {
+   name: "EveningGown",
+   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)
+
 
 
 /*
@@ -104,3 +133,17 @@ Features:
 */
 
 // ✍️ Solve it here ✍️
+const supercar = {
+  model: "Ferrari SF90",
+  price: 500000,
+  features: {
+    color: "Red"
+  }
+};
+function addFeature(supercar, featureName) {
+  supercar.features[featureName] = true;
+  console.log(`${featureName} has been added to ${supercar.model}.`);
+}
+addFeature(supercar, "turbo");
+
+console.log("Features:");
\ No newline at end of file
