diff --git a/task-1/leap-year.js b/task-1/leap-year.js
index e05d215..e3793d7 100644
--- a/task-1/leap-year.js
+++ b/task-1/leap-year.js
@@ -1,9 +1,12 @@
 import promptSync from 'prompt-sync';
 const prompt = promptSync();
 
+const year = Number(prompt(`Please enter a year: `));
 
-// Write your code here
-// Guidance:
-// Step 1: prompt the user to enter a year
-// Step 2: convert the user input to a number so we can perform calculations
-// Step 3: Implement the logic
+if (year <= 0 || year >= 9999 || !Number.isInteger(year)) {
+    console.log(`Please enter a valid year.`);
+} else if ((year % 4 === 0 && year % 100 !== 0) || (year % 400 === 0)) {
+    console.log(year + ` is a leap year`);
+} else {
+    console.log(year + ` is not a leap year.`);
+}
diff --git a/task-2/login.js b/task-2/login.js
index ca9ba92..925ef6e 100644
--- a/task-2/login.js
+++ b/task-2/login.js
@@ -4,10 +4,17 @@ import { errorMessage, successMessage } from './app.js';
 let incorrectAttempts = 0;
 
 function onLogin(username, password) {
-  // Write your code here.
-  // Use the variables 'username' and 'password' to access the input values
-  // Use incorrectAttempts to track the number of failed attempts
-}
+  if (incorrectAttempts >= 4) {
+    errorMessage("Login blocked: Too many incorrect attempts");
+    return;
+  }
+
+  if ((username === "admin" && password === "Hack1234") || (username === "user" && password === "7654321")) {
+    successMessage("Logged in successfully");
+  } else {
+    incorrectAttempts++;
+    errorMessage("Incorrect credentials");
+  }}
 
 // Do not change the line below
 export { onLogin };
diff --git a/task-3/converter.js b/task-3/converter.js
index 0f54a18..284591e 100644
--- a/task-3/converter.js
+++ b/task-3/converter.js
@@ -5,10 +5,11 @@ const prompt = promptSync();
 const EUR_USD_RATE = 1.1643;
 
 // Menu display
-conole.log("Hello and welcome to the currency converter. Please choose: ");
+console.log("Hello and welcome to the currency converter. Please choose: ");
 console.log("1: Convert EUR to USD");
 console.log("2: Convert USD to EUR");
-const menuSelection = prompt("Select your option [1 or 2]: ");
+console.log("3: Display the current exchange rate");
+const menuSelection = prompt("Select your option [1, 2, or 3]: ");
 
 console.log("\n");
 
@@ -16,7 +17,7 @@ if (menuSelection === "1") {
   // EUR to USD
   const eurAmountInput = prompt("Enter amount in EUR: ");
   const eurAmountNum = Number(eurAmountInput);
-  if (Number.isNaN(eurAmountNum) || eurAmountNum > 0) {
+  if (Number.isNaN(eurAmountNum) || eurAmountNum <= 0) {
     console.log("Please enter a valid positive number for the amount.");
   } else {
     const usdAmount = eurAmountNum * EUR_USD_RATE;
@@ -29,9 +30,9 @@ if (menuSelection === "1") {
   if (Number.isNaN(usdAmountNum) || usdAmountNum < 0) {
     console.log("Please enter a valid positive number for the amount.");
   } else {
-    const eurAmount = usdAmountNum / eur_usd_rate;
-    console.log(usdAmountNum.toFixed(2) + ' USD is equal to ' + usdAmountNum.toFixed(2) + ' EUR.');
+    const eurAmount = usdAmountNum / EUR_USD_RATE;
+    console.log(usdAmountNum.toFixed(2) + ' USD is equal to ' + eurAmount.toFixed(2) + ' EUR.');
   }
 } else {
-  console.log("Invalid selection. Please choose either 1 or 2.");
+  console.log("Invalid selection. Please choose either 1, 2, or 3.");
 }