diff --git a/src/filtering.ts b/src/filtering.ts
index 49411d8..bdf52e6 100644
--- a/src/filtering.ts
+++ b/src/filtering.ts
@@ -12,8 +12,9 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 function greaterThanTwentyFive(numbers: number[]): number[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return numbers.filter((num) => num >= 25); // replace empty array with what you see is fit
 }
+console.log(greaterThanTwentyFive(numbers));
 
 // `divisibleByFive` function that:
 // - Accepts "numbers" parameter of type "number[]".
@@ -23,7 +24,8 @@ function greaterThanTwentyFive(numbers: number[]): number[] {
 function divisibleByFive(numbers: number[]): number[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return numbers.filter((num) => num % 5 === 0); // replace empty array with what you see is fit
 }
 
+console.log(divisibleByFive(numbers));
 export { greaterThanTwentyFive, divisibleByFive };
diff --git a/src/mapping.ts b/src/mapping.ts
index 6f18eef..c002738 100644
--- a/src/mapping.ts
+++ b/src/mapping.ts
@@ -12,8 +12,9 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 function squaredNumbers(numbers: number[]): number[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return numbers.map((num) => num * num); // replace empty array with what you see is fit
 }
+console.log(squaredNumbers(numbers));
 
 // `doubledNumbers` function that:
 // - Accepts "numbers" parameter of type "number[]".
@@ -23,7 +24,8 @@ function squaredNumbers(numbers: number[]): number[] {
 function doubledNumbers(numbers: number[]): number[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return numbers.map((num) => num * 2); // replace empty array with what you see is fit
 }
+console.log(doubledNumbers(numbers));
 
 export { squaredNumbers, doubledNumbers };
diff --git a/src/mapping_filtering.ts b/src/mapping_filtering.ts
index 269ad83..cd9be7c 100644
--- a/src/mapping_filtering.ts
+++ b/src/mapping_filtering.ts
@@ -1,3 +1,5 @@
+import { divisibleByFive } from "./filtering";
+
 /**
  * Use this array of numbers if you want to
  * manually test your functions
@@ -12,8 +14,9 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 function filteredAndSquared(numbers: number[]): number[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return numbers.filter((num) => num >= 20).map((num) => num * num); // replace empty array with what you see is fit
 }
+console.log(filteredAndSquared(numbers));
 
 // `filteredAndTripled` function that:
 // - Accepts "numbers" parameter of type "number[]".
@@ -23,7 +26,8 @@ function filteredAndSquared(numbers: number[]): number[] {
 function filteredAndTripled(numbers: number[]): number[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return numbers.filter((num) => num % 5 === 0).map((num) => num * 3); // replace empty array with what you see is fit
 }
+console.log(filteredAndTripled(numbers));
 
 export { filteredAndSquared, filteredAndTripled };