diff --git a/factorial_recursion_example.ipynb b/factorial_recursion_example.ipynb
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+#Python
+
+# Define a recursive function to calculate the factorial
+def factorial(n):
+    # Base case: If n is 0 or 1, the factorial is 1
+    if n == 0 or n == 1:
+        return 1
+    # Recursive case: For n > 1, calculate factorial using recursion
+    else:
+        # The factorial of n is n multiplied by the factorial of (n-1)
+        return n * factorial(n - 1)
+
+# Ask the user for input
+number = int(input("Enter a non-negative integer: "))
+
+# Call the factorial function and print the result
+if number < 0:
+    print("Factorial is not defined for negative numbers.")
+else:
+    result = factorial(number)
+    print(f"The factorial of {number} is {result}.")
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