binomial coefficient A coefficient of x in the expansion of (x + y)n. The binomial coefficient nCm, (mn), or gives the number of ways of picking m unordered outcomes from n possibilities, and is also known as a combination. It has the value n!/(n - m)!m! The binomial coefficients form the rows of Pascal's triangle. Related category MATHEMATICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |