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#Author: OMKAR PATHAK

#This program finds the favtorial of the specified numbers

#For example, factorial of 5 = 5*4*3*2*1 = 120

def factorial(number):

'''This function finds the factorial of the number passed as argument'''

if number < 0:

print('Invalid entry! Cannot find factorial of a negative number')

if number == 0 or number == 1:

return 1

else:

return number * factorial(number - 1)

if __name__ == '__main__':

userInput = int(input('Enter the Number to find the factorial of: '))

print(factorial(userInput))