diff --git a/04 - Array Cardio Day 1/README.md b/04 - Array Cardio Day 1/README.md
new file mode 100644
index 0000000000..60ca0098a0
--- /dev/null
+++ b/04 - Array Cardio Day 1/README.md	
@@ -0,0 +1,2 @@
+## 1.Do the 6th exercise after dom exercise
+##
\ No newline at end of file
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 0dcfd00f40..6360afdd7d 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -27,7 +27,7 @@
       { first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 },
       { first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
     ];
-
+      
     const people = [
       'Bernhard, Sandra', 'Bethea, Erin', 'Becker, Carl', 'Bentsen, Lloyd', 'Beckett, Samuel', 'Blake, William', 'Berger, Ric', 'Beddoes, Mick', 'Beethoven, Ludwig',
       'Belloc, Hilaire', 'Begin, Menachem', 'Bellow, Saul', 'Benchley, Robert', 'Blair, Robert', 'Benenson, Peter', 'Benjamin, Walter', 'Berlin, Irving',
@@ -35,31 +35,52 @@
       'Berne, Eric', 'Berra, Yogi', 'Berry, Wendell', 'Bevan, Aneurin', 'Ben-Gurion, David', 'Bevel, Ken', 'Biden, Joseph', 'Bennington, Chester', 'Bierce, Ambrose',
       'Billings, Josh', 'Birrell, Augustine', 'Blair, Tony', 'Beecher, Henry', 'Biondo, Frank'
     ];
-    
+
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+        const inventorsOf1500=inventors.filter((inventor)=>(inventor.year>=1500 && inventor.year<1600));
+         console.table(inventorsOf1500);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors first and last names
-
+         const inventorFullNames=inventors.map((inventor)=>inventor.first.concat(' ',inventor.last));
+         console.log(inventorFullNames);
+          
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
-
-    // Array.prototype.reduce()
+           inventors.sort((a,b)=>a.year-b.year);
+    console.log(inventors);
+           // Array.prototype.reduce()
     // 4. How many years did all the inventors live all together?
-
-    // 5. Sort the inventors by years lived
-
+       const totalYear=inventors.reduce((acc,curr)=>acc+(curr.passed-curr.year),0);
+        console.log(totalYear);
+         
+    // 5. Sort the inventors by years lived            
+               const oldest =  inventors.sort((a,b)=>((b.passed-b.year)-(a.passed-a.year)));
+            console.table(oldest);
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
 
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
-
+         const sortedByLastName=people.sort((a,b)=>{
+               const aLastName=a.split(',');
+               const bLastName=b.split(',');
+               return aLastName[0].localeCompare(bLastName[0]);
+         })
+         console.table(people);
     // 8. Reduce Exercise
     // Sum up the instances of each of these
     const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
+    const freq=data.reduce((acc,curr)=>{
+        if(!acc[curr])
+        acc[curr]=1;
+         else
+         acc[curr]++;
+        return acc;
+    },{});
+    console.table(freq);
 
   </script>
 </body>
diff --git a/07 - Array Cardio Day 2/index-START.html b/07 - Array Cardio Day 2/index-START.html
index 4ca34c7536..8a039f7f2f 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -26,17 +26,29 @@
     ];
 
     // Some and Every Checks
+
     // Array.prototype.some() // is at least one person 19 or older?
+      const isAdult=people.some((person)=>( (new Date).getFullYear-person.year)>=19);
+      console.log({isAdult});
+
     // Array.prototype.every() // is everyone 19 or older?
+   const areTheyAdult=people.every((person)=>( (new Date).getFullYear-person.year)>=19);
+      console.log({areTheyAdult});
 
     // Array.prototype.find()
     // Find is like filter, but instead returns just the one you are looking for
     // find the comment with the ID of 823423
-
+       const idFinder=comments.find((person)=>person.id===823423);
+       console.log(idFinder);
     // Array.prototype.findIndex()
     // Find the comment with this ID
+    const idIndexFinder=comments.findIndex((person)=>person.id===823423);
+       console.log(idIndexFinder);
     // delete the comment with the ID of 823423
-
+   
+      comments.splice(idIndexFinder,1);
+    console.table(comments)
+       
   </script>
 </body>
 </html>