[issue35431] Add a function for computing binomial coefficients to the math module

[Yash Aggarwal]

Yash Aggarwal <aggarwal.yash2011 at gmail.com> added the comment:

Agreed, comb sounds much better than combination. And using the name binomial would make it sound like something that would puke out whole binomial series rather than a single coefficient(maybe leave it for that in case is it decided to be useful in the future).

PR 11414 implements simple algorithm that performs slower than using a factorial definition for k>n/3. 
@kellerfuchs I'd prefer if we could work on this since it's conflict free and already reflects the behavior everyone agreed upon. 

Would it be better to create a separate issue for math.perm to discuss its behavior?


If the behavior of comb is satisfactory, can we start with optimizations?

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<https://bugs.python.org/issue35431>
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