Question: Write a program where you solve these problems, use recursive functions. 1 . Factorial Description: Calculates the factorial of a positive integer n . Input:

Write a program where you solve these problems, use recursive functions.
1. Factorial
Description: Calculates the factorial of a positive integer n.
Input: A positive integer n.
Output: The factorial of n.
2. Fibonacci
Description: Calculates the nth Fibonacci number.
Input: A positive integer n.
Output: The nth Fibonacci number.
3. Sum of the digits of a number
Description: Calculates the sum of the digits of a positive integer n.
Input: A positive integer n.
Output: The sum of the digits of n.

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