Python Function Program with input argument and with return value

This type of function has one or more input argument and also a value to return to the main program.

Write a program to input a number and calculate its factorial.


def factorial(a):


for i in range (1,a+1):


return f

num=int(input("Enter a number: "))


print("Factorial of Enter Number is", b)


Enter a number: 3

Factorial of Enter Number is 6

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Python Program to Find Sum of Series 1²+2²+3²+….+n²

The mathematical formula to find the sum of 1²+2²+3²+….+n² is n(n+1)(2n+1)/6 So to find the sum of series we use this formula. Program: n = int(input("Enter Positive Number : ")) sum = 0 sum= (n*(n+