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Create nCr_&_nPr.py #144

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27 changes: 27 additions & 0 deletions Python/nCr_&_nPr.py
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Original file line number Diff line number Diff line change
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def fact(k):
f = i = 1
while i<=k:
f = i*f
i += 1
return f

def findperm(x, y):
num = fact(x)
den = fact(x - y)
perm = num / den
return perm

def findcomb(x, y):
num = fact(x)
den = fact(x - y)
den = fact(y) * den
comb = num / den
return comb

print("Enter the Value of n: ", end="")
n = int(input())
print("Enter the Value of r: ", end="")
r = int(input())

print("\nPermutation (nPr) =", findperm(n, r))
print("Combination (nCr) =", findcomb(n, r))