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TheAlgorithmsInPython/maths/combinations.py at itsvinayak-patch-1 · unconnect/TheAlgorithmsInPython · GitHub
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itsvinayak-patch-1
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TheAlgorithmsInPython
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maths
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combinations.py
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maths
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combinations.py
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from
math
import
factorial
def
combinations
(
n
,
k
):
"""
>>> combinations(10,5)
252
>>> combinations(6,3)
20
>>> combinations(20,5)
15504
"""
return
int
(
factorial
(
n
)
/
((
factorial
(
k
))
*
(
factorial
(
n
-
k
))))
if
__name__
==
"__main__"
:
from
doctest
import
testmod
testmod
()
You can’t perform that action at this time.
