diff --git a/01/app.js b/01/app.js
index 96dc2f5..4fab870 100644
--- a/01/app.js
+++ b/01/app.js
@@ -1,2 +1,10 @@
 const randomNumber = Math.round(Math.random() * 20);
 console.log(randomNumber);
+
+if (randomNumber > 5) {
+  for (let i = 5; i <= randomNumber; i++) {
+    console.log(i);
+  }
+} else {
+  console.log('Wylosowana liczba jest zbyt mała, aby użyć pętli');
+}
diff --git a/02/app.js b/02/app.js
index 8a41914..fd1c5a6 100644
--- a/02/app.js
+++ b/02/app.js
@@ -1,2 +1,14 @@
 const x = 5;
-let result = 0;
\ No newline at end of file
+let result = 0;
+
+for (let i = 1; i <= x; i++) {
+  result += i;
+}
+
+console.log(result);
+
+let i = 1;
+while (i <= x) {
+  result += i;
+  i++;
+}
diff --git a/03/app.js b/03/app.js
index c26c886..46ab80b 100644
--- a/03/app.js
+++ b/03/app.js
@@ -1,3 +1,9 @@
 const x = 10;
 let iteration = 0;
-let randomNumber = -1;
\ No newline at end of file
+let randomNumber = -1;
+
+while (randomNumber !== x) {
+  randomNumber = Math.round(Math.random() * 21);
+  iteration++;
+}
+console.log('Liczba prób: ' + iteration);