diff --git a/Problem_025.py b/Problem_025.py
new file mode 100644
index 0000000..042db58
--- /dev/null
+++ b/Problem_025.py
@@ -0,0 +1,15 @@
+a = 1
+b = 1
+c = 2
+
+index = 3
+while True:
+    a = b
+    b = c
+    c = a + b
+    index += 1
+    if len(str(c)) >= 1000:
+        break
+
+print(index)
+# Solution: 4782
\ No newline at end of file