diff --git a/labs02/task04.py b/labs02/task04.py
index 99ce033..df2493d 100644
--- a/labs02/task04.py
+++ b/labs02/task04.py
@@ -10,7 +10,7 @@ def sum_from_one_to_n(n):
     if n > 1:
         wynik = 0
         for i in range(n+1):
-            wynik = i + wynik
+            wynik += i
         return wynik
     else: return 0
     pass
diff --git a/labs02/task05.py b/labs02/task05.py
index f59268a..69c9138 100644
--- a/labs02/task05.py
+++ b/labs02/task05.py
@@ -10,7 +10,11 @@ np. odległość pomiędzy punktami (0, 0, 0) i (3, 4, 0) jest równa 5.
 """
 
 def euclidean_distance(x, y):
-    pass
+    sum = 0
+    for i in range(len(x)):
+        sum += ((x[i]-y[i])**2)
+    distance = sum ** (1/2)
+    return distance
 
 def tests(f):
     inputs = [[(2.3, 4.3, -7.5), (2.3, 8.5, -7.5)]]
diff --git a/labs02/task06.py b/labs02/task06.py
index ff4a9d3..0f57c7b 100644
--- a/labs02/task06.py
+++ b/labs02/task06.py
@@ -10,7 +10,11 @@ ma być zwracany napis "It's not a Big 'No!'".
 """
 
 def big_no(n):
-    pass
+    string = "NO!"
+    if n >= 5:
+        napis = string[0]+string[1]*n+string[2]
+        return napis
+    else: return "It's not a Big 'No!'"
 
 def tests(f):
     inputs = [[5], [6], [2]]