diff --git a/extra/1-factorial.js b/extra/1-factorial.js
index da9f8e6c..f5aae045 100644
--- a/extra/1-factorial.js
+++ b/extra/1-factorial.js
@@ -9,7 +9,13 @@
 */
 
 function factorial(input) {
-  // TODO
+  /*0! =1, 1! =1*/
+  if (input>0 && input<=1) {
+    return  1;
+  }else {
+    return input * factorial(input - 1);
+  }
+
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/mandatory/1-fix-functions.js b/mandatory/1-fix-functions.js
index 6323604f..dd91aaf1 100644
--- a/mandatory/1-fix-functions.js
+++ b/mandatory/1-fix-functions.js
@@ -10,8 +10,8 @@
 
 */
 
-function getMood() {
-  let isHappy = true;
+function getMood(isHappy) {
+  // let isHappy = true;
 
   if (isHappy) {
     return "I am happy";
@@ -20,10 +20,10 @@ function getMood() {
   }
 }
 
-function greaterThan10(num) {
-  let isBigEnough;
+function greaterThan10(isBigEnough) {
+  //let isBigEnough = true;
 
-  if (isBigEnough) {
+  if (isBigEnough > 10) {
     return "num is greater than 10";
   } else {
     return "num is not big enough";
diff --git a/mandatory/2-function-creation.js b/mandatory/2-function-creation.js
index d4590920..a5636970 100644
--- a/mandatory/2-function-creation.js
+++ b/mandatory/2-function-creation.js
@@ -4,7 +4,13 @@
     1. the user should be 18 or older
     2. the user must be logged in
 */
-function isAcceptableUser(userAge, isLoggedIn) {}
+function isAcceptableUser(userAge, isLoggedIn) {
+  if(userAge>= 18 && isLoggedIn){
+    return true
+  }else{
+    return false
+  }
+}
 
 /*
   Complete the function to apply discount percent based on how much is totalPrice in user cart.
@@ -15,18 +21,42 @@ function isAcceptableUser(userAge, isLoggedIn) {}
     is applieds and 142.5 should be returned)
 */
 
-function applyDiscount(totalPrice) {}
+function applyDiscount(totalPrice) {
+  if (totalPrice>200){
+    return totalPrice-(totalPrice * 0.1)
+  }else {
+    return totalPrice-(totalPrice *0.05)
+  }
+}
 
 /*
   Complete the function to print to the console the odd numbers between 1 and limit (use a while loop):
   */
-function printOddNumbers(limit) {}
+
+  function printOddNumbers(limit) {
+    let numberOfLoops= 1
+  while (numberOfLoops <limit) {
+    console.log(numberOfLoops);
+    numberOfLoops = numberOfLoops + 2;
+}
+}
 
 /*
   Complete the buyTwoGetTheCheapestFree function: if user buys two items, the cheapest item will be free!
   The function should return the price to be paid once the discount is applied.
 */
-function buyTwoGetTheCheapestFree(price1, price2) {}
+
+
+function buyTwoGetTheCheapestFree(price1, price2) {
+//   let price1 = 700
+// let price2 = 500
+if(price1>price2) {
+  return price1;
+}else if (price1 < price2)
+  return price2;
+}
+
+
 
 /*
   Complete the function to determine if it is suitable for a person to register based on their age!
@@ -34,10 +64,19 @@ function buyTwoGetTheCheapestFree(price1, price2) {}
   - if the person is older than 12 and younger than 90 it should return "You Can Register"
   - if the person is 90 or older it should return "You Don't Need To Register"
 */
-function canRegister(age) {}
+function canRegister(age) {
+if(age<=12){
+return "You Are Too Young To Register"
+}
+else if (age> 12 && age<90){
+return "You Can Register"
+}else {
+  return "You Don't Need To Register"
+}
+}
 
 /*
-  Complete the function so that it prints out to the console numbers in reverse order starting at
+  Complete the 1 (function so that it prints out to the console numbers in reverse order starting at
   number and going down to 1 (e.g. if number was 3, it would print:
     3
     2
@@ -45,7 +84,30 @@ function canRegister(age) {}
   )
 */
 
-function countReverse(number) {}
+/*function countReverse(number) {
+  number = number + "";
+	console.log()
+}*/
+
+function countReverse(number) {
+for(let i=number; i>0; i--){
+  console.log(i)
+}
+}
+
+// 
+// function repeatStr (n, s) {
+// var str="";
+// for(var i=0; i < n; i++)
+//   str+=s;
+//   return str;
+// }
+/*console.log(reverseNum(1234567));*/
+
+  
+   
+  
+
 
 /* ======= TESTS - DO NOT MODIFY ===== */