Question

Write a program that asks the user for a negative number, then prints out the product of all the numbers from -1 to that number Enter a negative number: -6 720 (The answer is 720 because-1x-2x-3x-4x-5 x-6 720).

Answer 1

n = int(input("Enter a negative number: "))
f = 1
n += 1
while(n<0):
    f *= n
    n += 1
print(f)

Output:

Enter a negative number: -7
720

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