Combinations.py

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Combinations.py

def factorial(n):
    fac = 1
    for i in range(1, n+1):
        fac = fac * i
    return fac

def combinations(n,k):
    return (factorial(n)/(factorial(n-k)*factorial(k)))

n = int(input("Enter n: "))
k = int(input("Enter k: "))
print ("Combinations =", combinations(n,k))