diff --git a/algorithms/2_BubbleSort/bubble_sort_exercise.md b/algorithms/2_BubbleSort/bubble_sort_exercise.md
index 5068b08..e930890 100644
--- a/algorithms/2_BubbleSort/bubble_sort_exercise.md
+++ b/algorithms/2_BubbleSort/bubble_sort_exercise.md
@@ -36,5 +36,5 @@ elements = [
     ]
 ``` 
 
-[Solution](https://github.com/codebasics/data-structures-algorithms-python/blob/master/algorithmsAlgorithms/2_BubbleSort/bubble_sort_exercise_solution.py)
+[Solution](https://github.com/codebasics/data-structures-algorithms-python/blob/master/algorithms/2_BubbleSort/bubble_sort_exercise_solution.py)
 
diff --git a/algorithms/8_recursion/recursion.py b/algorithms/8_recursion/recursion.py
new file mode 100644
index 0000000..a903e1f
--- /dev/null
+++ b/algorithms/8_recursion/recursion.py
@@ -0,0 +1,16 @@
+def find_sum(n):
+    if n==1:
+        return 1
+    return n + find_sum(n-1)
+
+def fib(n):
+    # 0,1,1,2,3,5,8 <-- fibonacci numbers
+    # --------------
+    # 0,1,2,3,4,5,6 <-- index
+    if n==0 or n==1:
+        return n
+    return fib(n-1) + fib(n-2)
+
+if __name__=='__main__':
+    print(find_sum(5))
+    print(fib(10))
\ No newline at end of file
diff --git a/data_structures/2_Arrays/Solution/3_odd_even_numbers.py b/data_structures/2_Arrays/Solution/3_odd_even_numbers.py
index 334b53c..ec1c4b7 100644
--- a/data_structures/2_Arrays/Solution/3_odd_even_numbers.py
+++ b/data_structures/2_Arrays/Solution/3_odd_even_numbers.py
@@ -2,8 +2,8 @@
 
 odd_numbers = []
 
-for i in range(max):
-    if i%2 == 1:
+for i in range(1, max):
+    if i % 2 == 1:
         odd_numbers.append(i)
 
-print("Odd numbers: ",odd_numbers)
+print("Odd numbers: ", odd_numbers)