diff --git a/week-3/1-exercises/A-array-find/exercise.js b/week-3/1-exercises/A-array-find/exercise.js
index d7fd51f..1f7b837 100644
--- a/week-3/1-exercises/A-array-find/exercise.js
+++ b/week-3/1-exercises/A-array-find/exercise.js
@@ -7,7 +7,12 @@
 
 var names = ["Rakesh", "Antonio", "Alexandra", "Andronicus", "Annam", "Mikey", "Anastasia", "Karim", "Ahmed"];
 
-var longNameThatStartsWithA = findLongNameThatStartsWithA(names);
+var longNameThatStartsWithA = names.find(findLongNameThatStartsWithA);
+
+
+function findLongNameThatStartsWithA(name) {
+  return name.length > 7 && name[0] === "A";
+}
 
 console.log(longNameThatStartsWithA);
 
diff --git a/week-3/1-exercises/B-array-some/exercise.js b/week-3/1-exercises/B-array-some/exercise.js
index 965c052..964f06e 100644
--- a/week-3/1-exercises/B-array-some/exercise.js
+++ b/week-3/1-exercises/B-array-some/exercise.js
@@ -16,6 +16,9 @@ var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
 
 var pairs = pairsByIndex.map(function(indexes) {
+  if(indexes === null) {
+    process.exit(1);
+  }
   var student = students[indexes[0]];
   var mentor = mentors[indexes[1]];
   return [student, mentor];
diff --git a/week-3/1-exercises/C-array-every/exercise.js b/week-3/1-exercises/C-array-every/exercise.js
index b515e94..884c01a 100644
--- a/week-3/1-exercises/C-array-every/exercise.js
+++ b/week-3/1-exercises/C-array-every/exercise.js
@@ -5,7 +5,7 @@
 var students = ["Omar", "Austine", "Dany", "Swathi", "Lesley", "Rukmini"];
 var group = ["Austine", "Dany", "Swathi", "Daniel"];
 
-var groupIsOnlyStudents; // complete this statement
+var groupIsOnlyStudents = group.includes(students); // complete this statement
 
 if (groupIsOnlyStudents) {
   console.log("The group contains only students");
diff --git a/week-3/1-exercises/D-array-filter/exercise.js b/week-3/1-exercises/D-array-filter/exercise.js
index 6e32cc6..aedf402 100644
--- a/week-3/1-exercises/D-array-filter/exercise.js
+++ b/week-3/1-exercises/D-array-filter/exercise.js
@@ -8,7 +8,10 @@
 
 var pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
 
-var pairsByIndex; // Complete this statement
+function isNumber(obj) {
+  return obj !== undefined && typeof (obj) === 'number' && !isNaN(obj)
+}
+var pairsByIndex = pairsByIndexRaw.filter(isNumber); // Complete this statement
 
 var students = ["Islam", "Lesley", "Harun", "Rukmini"];
 var mentors = ["Daniel", "Irina", "Mozafar", "Luke"];
diff --git a/week-3/1-exercises/E-array-map/exercise.js b/week-3/1-exercises/E-array-map/exercise.js
index 2835e92..33d835c 100644
--- a/week-3/1-exercises/E-array-map/exercise.js
+++ b/week-3/1-exercises/E-array-map/exercise.js
@@ -3,3 +3,22 @@
 
 var numbers = [0.1, 0.2, 0.3, 0.4, 0.5];
 
+function multiply100(number) {
+    return number * 100;
+}
+
+var numbersBy100 = numbers.map(multiply100);
+
+var numbersBy100 = numbers.map(function multiply100(number) {
+    return number * 100;
+});
+
+var numbersBy100 = numbers.map(function (number) {
+    return number * 100;
+});
+
+var numbersBy100 = numbers.map(number => {
+    return number * 100;
+});
+
+var numbersBy100 = numbers.map(number => number * 100);
\ No newline at end of file
diff --git a/week-3/1-exercises/F-array-forEach/exercise.js b/week-3/1-exercises/F-array-forEach/exercise.js
index e83e2df..6f17c5c 100644
--- a/week-3/1-exercises/F-array-forEach/exercise.js
+++ b/week-3/1-exercises/F-array-forEach/exercise.js
@@ -9,6 +9,18 @@
 
 var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
 
+function printFizzBuzz (number) {
+  if(number % 3 === 0 && number % 5 === 0) {
+    return "FizzBuzz";
+  } else if(number % 3 === 0) {
+    return "Fizz";
+  } else if(number % 5=== 0) {
+    return "Buzz";
+  } return number;
+}
+arr.map(printFizzBuzz).forEach(index => console.log(index));
+
+
 /* EXPECTED OUTPUT */
 
 /*
diff --git a/week-3/1-exercises/G-array-methods/exercise.js b/week-3/1-exercises/G-array-methods/exercise.js
index 44e9c80..b16182b 100644
--- a/week-3/1-exercises/G-array-methods/exercise.js
+++ b/week-3/1-exercises/G-array-methods/exercise.js
@@ -4,7 +4,7 @@
 */
 
 var numbers = [3, 2, 1];
-var sortedNumbers; // complete this statement
+var sortedNumbers =numbers.sort(); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/week-3/1-exercises/G-array-methods/exercise2.js b/week-3/1-exercises/G-array-methods/exercise2.js
index 3dd24a1..dd87089 100644
--- a/week-3/1-exercises/G-array-methods/exercise2.js
+++ b/week-3/1-exercises/G-array-methods/exercise2.js
@@ -7,7 +7,7 @@
 var mentors = ["Daniel", "Irina", "Rares"];
 var students = ["Rukmini", "Abdul", "Austine", "Swathi"];
 
-var everyone; // complete this statement
+var everyone = mentors.concat(students); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/week-3/1-exercises/H-array-methods-2/exercise.js b/week-3/1-exercises/H-array-methods-2/exercise.js
index d36303b..b31cd58 100644
--- a/week-3/1-exercises/H-array-methods-2/exercise.js
+++ b/week-3/1-exercises/H-array-methods-2/exercise.js
@@ -15,8 +15,8 @@ var everyone = [
   "Swathi"
 ];
 
-var firstFive; // complete this statement
-var lastFive; // complete this statement
+var firstFive = everyone.slice(0, 5); // complete this statement
+var lastFive = everyone.slice(2, 7); // complete this statement
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/week-3/1-exercises/H-array-methods-2/exercise2.js b/week-3/1-exercises/H-array-methods-2/exercise2.js
index b7be576..d4f7c2c 100644
--- a/week-3/1-exercises/H-array-methods-2/exercise2.js
+++ b/week-3/1-exercises/H-array-methods-2/exercise2.js
@@ -7,7 +7,11 @@
   Tip: use the string method .split() and the array method .join()
 */
 
-function capitalise(str) {}
+function capitalise(str) {
+  let firstLetter = str.split(0,1);
+  firstLetter.toUpperCase();
+return firstLetter.join();
+}
 
 /* 
   DO NOT EDIT BELOW THIS LINE
diff --git a/week-3/1-exercises/H-array-methods-2/exercise3.js b/week-3/1-exercises/H-array-methods-2/exercise3.js
index 82e9dd8..75a6b76 100644
--- a/week-3/1-exercises/H-array-methods-2/exercise3.js
+++ b/week-3/1-exercises/H-array-methods-2/exercise3.js
@@ -7,7 +7,7 @@
 var ukNations = ["Scotland", "Wales", "England", "Northern Ireland"];
 
 function isInUK(country) {
-  return; // complete this statement
+  return ukNations.includes(country); // complete this statement
 }
 
 /* 
diff --git a/week-3/2-mandatory/1-oxygen-levels.js b/week-3/2-mandatory/1-oxygen-levels.js
index f9d745f..e85681b 100644
--- a/week-3/2-mandatory/1-oxygen-levels.js
+++ b/week-3/2-mandatory/1-oxygen-levels.js
@@ -9,7 +9,19 @@ To be safe to land on, a planet needs to have an Oxygen level between 19.5% and
 Write a function that finds the first safe oxygen level in the array - Oxygen between 19.5% and 23.5%
 */
 
-function safeLevels() {
+function findRightPlanet (oxygenLevelOfPlanet) {
+    if (parseFloat(oxygenLevelOfPlanet) > 19.50 && parseFloat(oxygenLevelOfPlanet) < 23.50) {
+       
+        return `${oxygenLevelOfPlanet}%`;
+    }
+    else {
+return;
+    }
+}
+
+function safeLevels(oxygenLevel) {
+return oxygenLevel.find(findRightPlanet);
+
 
 }
 
diff --git a/week-3/2-mandatory/2-bush-berries.js b/week-3/2-mandatory/2-bush-berries.js
index aca45ad..66ef591 100644
--- a/week-3/2-mandatory/2-bush-berries.js
+++ b/week-3/2-mandatory/2-bush-berries.js
@@ -9,11 +9,20 @@
 
   Use the tests to confirm which message to return
 */
-
-function bushChecker() {
-
+function checkColourPink(berryColour) {
+if(berryColour === "pink") {
+  return true;
+}
 }
 
+function bushChecker(allBushBerryColours) {
+let colourResult = allBushBerryColours.every(checkColourPink);
+if(colourResult === true) {
+  return "Bush is safe to eat from";
+} else {
+ return "Toxic! Leave bush alone!";
+}
+}
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 let bushBerryColours1 = ["pink", "pink", "pink", "neon", "pink", "transparent"]
diff --git a/week-3/2-mandatory/3-space-colonies.js b/week-3/2-mandatory/3-space-colonies.js
index 239eddd..5fa18a6 100644
--- a/week-3/2-mandatory/3-space-colonies.js
+++ b/week-3/2-mandatory/3-space-colonies.js
@@ -8,10 +8,16 @@
   NOTE: don't include any element that is not a "family".
 */
 
-function colonisers() {
+//filter to remove non family and non A start
 
+function colonisers(voyagersArray) {
+  return voyagersArray.filter(function(voyagerName) {
+    return voyagerName.startsWith("A") && voyagerName.includes("family");
+  })
 }
 
+
+
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const voyagers = [
diff --git a/week-3/2-mandatory/4-eligible-students.js b/week-3/2-mandatory/4-eligible-students.js
index d8fe052..296b3aa 100644
--- a/week-3/2-mandatory/4-eligible-students.js
+++ b/week-3/2-mandatory/4-eligible-students.js
@@ -7,9 +7,17 @@
   - Returns an array containing only the names of the who have attended AT LEAST 8 classes
 */
 
-function eligibleStudents() {
+//nested array [0] name [1] attendance, return array with just index [0] if [1] is >= 8
+function eligibleStudents(attendancesArray) {
+  let namesArray = [];
+  for(let i= 0; i < attendancesArray.length; i++) {
+    if (attendancesArray[i][1] >= 8) {
+      namesArray.push(attendancesArray[i][0]);
+    }  
+  } return namesArray;
+};
+
 
-}
 
 /* ======= TESTS - DO NOT MODIFY ===== */
 
diff --git a/week-3/2-mandatory/5-journey-planner.js b/week-3/2-mandatory/5-journey-planner.js
index 816637d..c50cd4a 100644
--- a/week-3/2-mandatory/5-journey-planner.js
+++ b/week-3/2-mandatory/5-journey-planner.js
@@ -6,10 +6,16 @@
 
   NOTE: only the names should be returned, not the means of transport.
 */
-
-function journeyPlanner() {
+// return[0] index value if incudes string "transport"
+function journeyPlanner(londonLocationsArray, transportMethod) {
+  let locationsAvailableArray =[];
+for(let i = 0; i < londonLocationsArray.length; i++) {
+  if (londonLocationsArray[i].includes(transportMethod)) {
+    locationsAvailableArray.push(londonLocationsArray[i][0]);
+  } 
+  } return locationsAvailableArray;
+  
 }
-
 /* ======= TESTS - DO NOT MODIFY ===== */
 
 const londonLocations = [
diff --git a/week-3/2-mandatory/6-lane-names.js b/week-3/2-mandatory/6-lane-names.js
index ef4e1c5..b8bf309 100644
--- a/week-3/2-mandatory/6-lane-names.js
+++ b/week-3/2-mandatory/6-lane-names.js
@@ -4,8 +4,13 @@
   Write a function that will return all street names which contain 'Lane' in their name.
 */
 
-function getLanes() {
 
+  function checkLanes(streetNameAsString) {
+  return streetNameAsString.includes("Lane");
+  }
+
+function getLanes(streetNamesArray) {
+ return streetNamesArray.filter(checkLanes);
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */
diff --git a/week-3/2-mandatory/7-password-validator.js b/week-3/2-mandatory/7-password-validator.js
index 8f9e597..45eba65 100644
--- a/week-3/2-mandatory/7-password-validator.js
+++ b/week-3/2-mandatory/7-password-validator.js
@@ -22,8 +22,53 @@ PasswordValidationResult=  [false, false, false, false, true]
 
 */
 
-function validatePasswords(passwords) {
+function fiveOrMoreCharacters(passwordString) {
+    return passwordString.length >= 5; 
+}
+  
+
+function containsUpperCase(passwordString) {
+  let regex = /[A-Z]/;
+  return regex.test(passwordString);
+}
+
+function containsLowerCase(passwordString) {
+  let regex = /[a-z]/;
+  return regex.test(passwordString);
+}
 
+function containsNumbers(passwordString) {
+  let regex = /[0-9]/;
+  return regex.test(passwordString);
+}
+
+function containsSymbols(passwordString) {
+  let regex = /[!#$%.*&]/;
+  return regex.test(passwordString);
+}
+
+function validatePasswords(passwordsArray) {
+  return passwordsArray.map((passwordString, index, passwordsArray) => {
+    let notRepeated = true;
+    for (let j = 0; j < passwordsArray.length; j++) {
+      if (index !== j) {
+        if (passwordsArray[index] === passwordsArray[j]) {
+          notRepeated = false;
+          if (index < j) { notRepeated = true }
+          break;
+        }
+      }
+      if (!notRepeated) {
+        break;
+      }
+    }
+    return fiveOrMoreCharacters(passwordString) 
+      && containsUpperCase(passwordString) 
+      && containsLowerCase(passwordString) 
+      && containsNumbers(passwordString)
+      && containsSymbols(passwordString)
+      && notRepeated
+  })
 }
 
 /* ======= TESTS - DO NOT MODIFY ===== */