The ancient Indian mathematicians knew about the coefficients in the expansions of (x+y)^n,<=n<=7.The arrangement of these coefficients was in the form of a diagram called Meru-Prastara, provided by Pingla. The term binomial coefficient was first introduced by the German mathematician, Michael Stipel (1486-1567 A.D.) in approximately 1544 A.D. Bombelli (1572 A.D.) also gave the coefficients in the expansion of (a+b)^n, for n=1,2,....,7 and Oughtred (1631 A.D. ) gave them for n=1,2,3......10. The arithmetic triangle, popularly known as Pascal's triangle.