diff --git a/Q21.py b/Q21.py
new file mode 100644
index 0000000..56045e2
--- /dev/null
+++ b/Q21.py
@@ -0,0 +1,12 @@
+# fibonacci series
+num1 = eval(input(' Enter number of terms '))
+FN = 0 ; SN = 1
+print(FN)
+print(SN)
+for i in range(2, num1):
+    TN = FN + SN
+    print(TN)
+    FN = SN
+    SN = TN
+    i += 1
+