diff --git a/77. Combinations/recursive.py b/77. Combinations/recursive.py
new file mode 100644
index 0000000..e875df8
--- /dev/null
+++ b/77. Combinations/recursive.py	
@@ -0,0 +1,12 @@
+class Solution:
+    def combine(self, n: int, k: int) -> List[List[int]]:
+        if not (0 <= k <= n):
+            return []
+        if k == 0:
+            return [[]]
+        res = self.combine(n - 1, k - 1)
+        for x in res:
+            x.append(n)
+        for x in self.combine(n - 1, k):
+            res.append(x)
+        return res