comb or nCr or binomial takes as argument two
integers n and p.
comb(n,p) or nCr(n,p) or binomial(n,p) returns
(pn) =Cnp.
Input :
Output :
Remark
binomial (unlike comb, nCr)
may have a third real argument,
in this case binomial(n,p,a) returns
(pn) ap(1−a)n−p.