diff --git a/src/functions.ts b/src/functions.ts
index 674ff85..c96e72c 100644
--- a/src/functions.ts
+++ b/src/functions.ts
@@ -8,6 +8,7 @@
  */
 function greet(name: string): void {
   // Your code here
+  console.log("Hello "+name);
 }
 
 /**
@@ -21,7 +22,9 @@ function greet(name: string): void {
  */
 function isOdd(n: number): boolean {
   // Your code here
-
+  if(n % 2 !== 0){
+    return true
+  }
   return false; // replace false with what you see is fit
 }
 
@@ -36,8 +39,7 @@ function isOdd(n: number): boolean {
  */
 function oddsSmallerThan(n: number): number {
   // Your code here
-
-  return -1; // replace -1 with what you see is fit
+  return Math.ceil((n-1)/2); // replace -1 with what you see is fit
 }
 
 /**
@@ -52,8 +54,11 @@ function oddsSmallerThan(n: number): number {
  */
 function squareOrDouble(n: number): number {
   // Your code here
+  if(n % 2 === 0){
+    return n*2;
+  }
 
-  return -1; // replace -1 with what you see is fit
+  return n*n; // replace -1 with what you see is fit
 }
 
 export { greet, isOdd, oddsSmallerThan, squareOrDouble };