diff --git a/src/functions-and-arrays.js b/src/functions-and-arrays.js
index 18c9498..1039563 100644
--- a/src/functions-and-arrays.js
+++ b/src/functions-and-arrays.js
@@ -1,18 +1,106 @@
 // Progression #1: Greatest of the two numbers
-
+function greatestOfTwoNumbers(num1,num2){
+  if(num1>num2)
+    {return num1;}
+  else
+    {return num2;}
+}
 // Progression #2: The lengthy word
 const words = ['mystery', 'brother', 'aviator', 'crocodile', 'pearl', 'orchard', 'crackpot'];
-
+function findScaryWord(words){
+  if(words.length==0){
+    return null;
+  }  
+  for(i=0;i<words.length;i++){      
+    if(words[0].length<words[i].length){
+      words[0] = words[i];
+    }   
+  }
+  return words[0];
+}
 // Progression #3: Net Price
 const numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];
-
+function netPrice(numbers){  
+  let sum=0;
+  for(i=0;i<numbers.length;i++){
+    if(numbers[i]!=0){
+      sum = sum +numbers[i];
+    }     
+  }      
+  return sum; 
+}
 // Progression #4: Calculate the average
+function add(numbers){  
+  let sum=0;
+  for(i=0;i<numbers.length;i++){
+    if(typeof numbers[i]=='string'){      
+        sum = sum + numbers[i].length;    
+    } 
+    else if(numbers[i]==true){
+      sum = sum+1;
+    }
+    else if(numbers[i]==false){
+      sum = sum +0;
+    }
+    else if(typeof numbers[i]==="number"){      
+        sum = sum + numbers[i];      
+    }    
+    else throw Error("Unsupported data type sir or ma'am");
+  }      
+  return sum; 
+}
 // Progression 4.1: Array of numbers
 const numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9];
-
+function midPointOfLevels(numbersAvg){
+  let sum = 0;
+  if(numbersAvg.length==0){
+    return null;
+  }
+  else{
+  for(let i=0;i<numbersAvg.length;i++){
+    sum = sum+numbersAvg[i];    
+  }
+  return sum/numbersAvg.length;
+  }
+}
 // Progression 4.2: Array of strings
 const wordsArr = ['seat', 'correspond', 'linen', 'motif', 'hole', 'smell', 'smart', 'chaos', 'fuel', 'palace'];
-
+function averageWordLength(wordsArr){
+  let sum=0;
+  if(wordsArr.length==0){
+    return null;
+  }
+  else{
+  for(let i=0;i<wordsArr.length;i++){
+    sum = sum + wordsArr[i].length;
+  }
+  return sum/wordsArr.length;
+}
+}
+function avg(mixedArr){
+  let sum=0;
+  if(mixedArr.length==0){
+    return null;
+  }
+  else{
+  for(let i=0;i<mixedArr.length;i++){
+    if(typeof(mixedArr[i]) == 'string'){
+      sum = sum+mixedArr[i].length;
+    }
+     else if(mixedArr[i]==true){
+      sum = sum + 1;      
+    }
+    else if(mixedArr[i]==false){
+      sum = sum + 0;      
+    }
+    else {
+      sum = sum+mixedArr[i];
+    }
+  }
+  var ans = parseFloat( (sum/mixedArr.length).toFixed(2));
+  return ans;
+}
+}
 // Progression #5: Unique arrays
 const wordsUnique = [
   'bread',
@@ -28,10 +116,36 @@ const wordsUnique = [
   'egg',
   'flour'
 ];
-
+function uniqueArray(wordsUnique){
+  let arr=[];
+  if(wordsUnique.length==0){
+    return null;
+  }
+ else{
+  for(let i=0;i<wordsUnique.length;i++){
+    for(let j=i+1;j<wordsUnique.length-1;j++){
+   if(wordsUnique[i] !=  wordsUnique[i+1]){
+     arr[i] = wordsUnique[i];
+   }
+   }  
+  }
+  return arr;  
+ }
+}
 // Progression #6: Find elements
 const wordsFind = ['machine', 'subset', 'trouble', 'starting', 'matter', 'eating', 'truth', 'disobedience'];
-
+function searchElement(wordsFind,_find){
+  if(wordsFind.length==0){
+    return null;
+  }
+  else{
+    for(let i=0;i<wordsFind.length;i++){
+      if(wordsFind[i]==_find){
+        return true;
+      }
+    }
+  }
+}
 // Progression #7: Count repetition
 const wordsCount = [
   'machine',
@@ -46,6 +160,15 @@ const wordsCount = [
   'disobedience',
   'matter'
 ];
+function howManyTimesElementRepeated(wordsCount,_count){
+  let count=0;
+  for(let i=0;i<wordsCount.length;i++){
+    if(wordsCount[i]==_count){
+      count=count+1;
+    }
+  }
+  return count;
+}
 
 // Progression #8: Bonus
 
@@ -61,3 +184,17 @@ const matrix = [
   [24, 55, 58, 05, 66, 73, 99, 26, 97, 17],
   [21, 36, 23, 09, 75, 00, 76, 44, 20, 45]
 ];
+
+function maximumProduct(matrix){
+  let sum=0;
+  for(let i=0;i<matrix.length;i++){
+    for(let j=0;j<matrix[i].length;j++){
+      let mmatrix = matrix[i];
+      sum = sum+mmatrix[j];
+    }
+  }
+  let len = matrix.length*matrix.length;
+  if(sum==len){
+    return 1;
+  }
+}