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What do you mean by binomial coefficient ​

User Jayme
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Binomial coefficient:

In mathematics, the binomial coefficients are the positive integers that occur as coefficients in the binomial theorem. Commonly, a binomial coefficient is indexed by a pair of integers n ≥ k ≥ 0 and is written
n C_(r).

It is the coefficient of the
x^(k) term in the polynomial expansion of the binomial power
(1+x)^(k), and it is given by the formula


n C_(r)=((n) !)/((n-r) !(r) !)

User Davidthings
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