diff --git a/extra/1-factorial.js b/extra/1-factorial.js
index da9f8e6c..4a4e7183 100644
--- a/extra/1-factorial.js
+++ b/extra/1-factorial.js
@@ -8,8 +8,16 @@
     Using a loop, complete the function below so it returns the factorial of the number being passed in. 
 */
 
-function factorial(input) {
-  // TODO
+function factorial(number) {
+  
+  let sumOfMultiple = 1;
+  let x= 1 ;
+   while(  x < number) {
+    x++ ;
+   sumOfMultiple *= x
+  ;
+  }
+  return sumOfMultiple ;
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/mandatory/1-fix-functions.js b/mandatory/1-fix-functions.js
index 6323604f..7178b5e7 100644
--- a/mandatory/1-fix-functions.js
+++ b/mandatory/1-fix-functions.js
@@ -11,19 +11,19 @@
 */
 
 function getMood() {
-  let isHappy = true;
-
-  if (isHappy) {
+let isHappy;
+  if (isHappy===true) {
     return "I am happy";
   } else {
-    return "I am not happy";
-  }
-}
+    return "I am not happy" ;
+  } 
+} ;
+
 
 function greaterThan10(num) {
-  let isBigEnough;
+  let isBigEnough=10;
 
-  if (isBigEnough) {
+  if (isBigEnough < num) {
     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..ba9bc9f8 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===true){
+    return true ;
+  } else {
+return false;
+  }
+}
 
 /*
   Complete the function to apply discount percent based on how much is totalPrice in user cart.
@@ -15,18 +21,43 @@ function isAcceptableUser(userAge, isLoggedIn) {}
     is applieds and 142.5 should be returned)
 */
 
-function applyDiscount(totalPrice) {}
+function applyDiscount(totalPrice) {
+  if (totalPrice > 200) {
+    return totalPrice* 0.9
+  } else {
+    return totalPrice * 0.95
+  }
+
+}
 
 /*
   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 count = 1;
+ 
+  
+  while ( count <= limit ) {
+    
+    console.log(count) ;
+    count = count + 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) { 
+   
+if ( price1 > price2 ) {
+
+  return price1
+} else {
+return price2
+}
+}
 
 /*
   Complete the function to determine if it is suitable for a person to register based on their age!
@@ -34,7 +65,16 @@ 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 < 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
@@ -45,7 +85,14 @@ function canRegister(age) {}
   )
 */
 
-function countReverse(number) {}
+function countReverse(number) {
+  let reverse = number;
+  while(reverse > 0 ) {
+   
+    console.log (reverse) ;
+    reverse -- ;
+  }
+}
 
 /* ======= TESTS - DO NOT MODIFY ===== */