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Python 3 is the latest version of the Python programming language and was formally released on December 3rd, 2008. Use this tag along with the main python tag to denote programs that are meant to be run on a Python 3 interpreter only. Do not mix this tag with the python-2.x tag.
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Project Euler # 53 Combinatoric selections in Python
just a little hack if you want a more fast solution,
can become faster if consider the similarity of the nCr and nC(n-r)
dic=[1]
for i in range(1,101):
val =dic[-1]*i
dic.append(val)
def c …